Title: £261 Cheap Flights from Oslo to Pittsburgh (OSL to PIT) - Expedia.co.uk ![Downtown skyline of Pittsburgh, Pennsylvania at sunset in USA](https://images.trvl-media.com/place/601717/e27fc33f-871a-4c1c-aa88-e2d0f8e35873.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/601717/e27fc33f-871a-4c1c-aa88-e2d0f8e35873.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £261 Cheap Flights from Oslo (OSL) to Pittsburgh (PIT) [View £261 flight on Tue, 22 Sept 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:OSL,to:PIT,departure:22/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:260.75&airProductToken=AQq2AQoyCMKCARIDNzgxGM5cIOuJASiLu5gDMKG8mAM4T0AAWAFqBU5PQkFHcglPTE41QzVCV1AKPwjCggESBDE1MDYY64kBIKlRKPa8mAMwzMCYAzhPQAFYAWoFTk9CQUdyCU9MTjVDNUJXUHoKCMGCARIEMTUwNgo_CMKCARIENjU0MhipUSCPmgEo68GYAzDWwpgDOE9AAVgBagVOT0JBR3IJT0xONUM1QldQegoI2bABEgQ2NTQyEgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Gardermoen Airport (OSL) to Pittsburgh International Airport (PIT) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SK.svg) SAS [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SK"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:OSL,to:PIT,departure:12/03/2026TANYT&leg2=from:PIT,to:OSL,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from Oslo (OSL) to Pittsburgh (PIT) Prices were available within the past 7 days and start at £261 for one-way flights and £479 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £479 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:478.66&airProductToken=AQq2AQoyCMKCARIDNzg1GM5cIOuJASjZ9JIDMO_1kgM4T0AAWAFqBU5PQkFHcglPSE40QzhCV1AKPwjCggESBDE1MTYY64kBIKlRKLr2kgMwkPqSAzhPQAFYAWoFTk9CQUdyCU9ITjRDOEJXUHoKCMGCARIEMTUxNgo_CMKCARIENDcwORipUSCPmgEo3fqSAzDL-5IDOE9AAVgBagVOT0JBR3IJT0hONEM4QldQegoI2bABEgQ0NzA5CrYBCj8IwoIBEgQ2NzE2GI-aASCpUSi5opQDMJejlAM4T0AAWAFqBU5PQkFHcglPS040QzhCV1B6CgjZsAESBDY3MTYKPwjCggESBDE1MTEYqVEg64kBKJKllAMwxaiUAzhPQAFYAWoFTk9CQUdyCU9LTjRDOEJXUHoKCMGCARIEMTUxMQoyCMKCARIDNzgwGOuJASDOXCiLqZQDMI2qlAM4T0ABWAFqBU5PQkFHcglPS040QzhCV1ASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £500 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:499.90&airProductToken=AQqtAQozCMyQARIDODY3GM5cIKUEKKf0kgMwqfWSAzhTQABYAWoIRUNPTElHSFRyCFNYSFhBWEJRCjMIzJABEgM0MzAYpQQgrhwokvaSAzCz-pIDOFNAAVgBaghFQ09MSUdIVHIIU1hIWEFYQlEKQQjMkAESBDkzODAYrhwgj5oBKIj7kgMw8fuSAzhTQAFYAWoIRUNPTElHSFRyCFNYSFhBWEJRegoI1YIBEgQ5MzgwCrgBCkEIzLABEgQzMjgzGI-aASCuHCido5QDMIaklAM4S0AAWAFqCEVDT0xJR0hUcghLWEhQQVhCUXoKCNWCARIEMzI4MwoxCMywARIBORiuHCC5PCiFppQDMJKqlAM4S0ABWAFqCEVDT0xJR0hUcghLWEhQQVhCUQpACMywARIEMTIxOBi5PCDOXCihr5QDMLKwlAM4S0ABWAFqCEVDT0xJR0hUcghLWEhQQVhCUXoKCLKYARIEMTIxOBIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £502 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:501.66&airProductToken=AQq2AQoyCMKCARIDNzg1GM5cIOuJASjZ9JIDMO_1kgM4T0AAWAFqBU5PQkFHcglPSE40QzhCV1AKPwjCggESBDE1MTYY64kBIKlRKLr2kgMwkPqSAzhPQAFYAWoFTk9CQUdyCU9ITjRDOEJXUHoKCMGCARIEMTUxNgo_CMKCARIENDcwORipUSCPmgEo3fqSAzDL-5IDOE9AAVgBagVOT0JBR3IJT0hONEM4QldQegoI2bABEgQ0NzA5CmkKMwjCggESAzE3MBiPmgEg64kBKOmmlAMwoaqUAzhRQABYAWoFTk9CQUdyCVFLTjdDOEI0UAoyCMKCARIDNzg0GOuJASDOXCiIr5QDMIWwlAM4UUABWAFqBU5PQkFHcglRS043QzhCNFASCggBEAEYASoCQkEYASIECAEQASgCKAMwDQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £504 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:503.10&airProductToken=AQqtAQozCMyQARIDODY3GM5cIKUEKKf0kgMwqfWSAzhTQABYAWoIRUNPTElHSFRyCFNYSFhBWEJRCjMIzJABEgM0MzAYpQQgrhwokvaSAzCz-pIDOFNAAVgBaghFQ09MSUdIVHIIU1hIWEFYQlEKQQjMkAESBDkzODAYrhwgj5oBKIj7kgMw8fuSAzhTQAFYAWoIRUNPTElHSFRyCFNYSFhBWEJRegoI1YIBEgQ5MzgwCq0BCkEIzJABEgQ4Nzk3GI-aASCIGCj_pZQDMM6mlAM4S0AAWAFqCEVDT0xJR0hUcghLWEhQQVhCUXoKCNWCARIEODc5NwozCMyQARIDNDE3GIgYIKUEKI2vlAMw8rKUAzhLQAFYAWoIRUNPTElHSFRyCEtYSFBBWEJRCjMIzJABEgM4NTgYpQQgzlwozLOUAzDJtJQDOEtAAVgBaghFQ09MSUdIVHIIS1hIUEFYQlESCggCEAEYAioCTEgYASIECAEQASgCKAMoBDAL) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £506 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:505.95&airProductToken=AQq2AQoyCMKCARIDNzg1GM5cIOuJASjZ9JIDMO_1kgM4T0AAWAFqBU5PQkFHcglPSE41QzVCV1AKPwjCggESBDE1MTYY64kBIKlRKLr2kgMwkPqSAzhPQAFYAWoFTk9CQUdyCU9ITjVDNUJXUHoKCMGCARIEMTUxNgo_CMKCARIENDcwORipUSCPmgEo3fqSAzDL-5IDOE9AAVgBagVOT0JBR3IJT0hONUM1QldQegoI2bABEgQ0NzA5EgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![British Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BA.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £507 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:506.85&airProductToken=AQq2AQoyCMKCARIDNzg1GM5cIOuJASjZ9JIDMO_1kgM4T0AAWAFqBU5PQkFHcglPSE41QzVCV1AKPwjCggESBDE1MTYY64kBIKlRKLr2kgMwkPqSAzhPQAFYAWoFTk9CQUdyCU9ITjVDNUJXUHoKCMGCARIEMTUxNgo_CMKCARIENDcwORipUSCPmgEo3fqSAzDL-5IDOE9AAVgBagVOT0JBR3IJT0hONUM1QldQegoI2bABEgQ0NzA5EgoIARABGAEqAkJBGAEiBAgBEAEoAigDMA0) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £525 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:524.30&airProductToken=AQqtAQozCMyQARIDODY3GM5cIKUEKKf0kgMwqfWSAzhTQABYAWoIRUNPTElHSFRyCFNYSFhBWEJRCjMIzJABEgM0MzAYpQQgrhwokvaSAzCz-pIDOFNAAVgBaghFQ09MSUdIVHIIU1hIWEFYQlEKQQjMkAESBDkzODAYrhwgj5oBKIj7kgMw8fuSAzhTQAFYAWoIRUNPTElHSFRyCFNYSFhBWEJRegoI1YIBEgQ5MzgwCq4BCkEIzJABEgQ4ODYxGI-aASCuHCido5QDMIaklAM4TEAAWAFqCEVDT0xJR0hUcghMWEhRQVhCUXoKCNWCARIEODg2MQozCMyQARIDNDM3GK4cIIwVKLOklAMwsaiUAzhMQAFYAWoIRUNPTElHSFRyCExYSFFBWEJRCjQIzJABEgQyNDUyGIwVIM5cKJCplAMwl6qUAzhMQAFYAWoIRUNPTElHSFRyCExYSFFBWEJREgoIAhABGAIqAkxIGAEiBAgBEAEoAigDKAQwCw) ![Icelandair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/fi.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £549 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:548.20&airProductToken=AQplCjAIxpIBEgMzMjMYzlwgiiko5viSAzCQ-pIDOE9AAFgBagVMSUdIVHIIT1AyUU5PTFQKMQjGkgESAzgzMRiKKSCPmgEol4WTAzCTiJMDOE9AAVgBagVMSUdIVHIIT1AyUU5PTFQKZQoxCMaSARIDODMwGI-aASCKKSiZppQDMPeolAM4T0AAWAFqBUxJR0hUcghPUDJRTk9MVAowCMaSARIDMzE4GIopIM5cKNaplAMw-6qUAzhPQAFYAWoFTElHSFRyCE9QMlFOT0xUEgoIARABGAEqAkZJGAEiBAgBEAEoAigDKAQwAQ) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Tue, 21 Jul - Wed, 5 Aug OSL Oslo PIT Pittsburgh £556 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:05/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:556.00&airProductToken=AQq4AQpACMywARIEMTIxORjOXCC5PCjX85IDMOj0kgM4V0AAWAFqCEVDT0xJR0hUcghXWEhYQVhCUXoKCLKYARIEMTIxOQoxCMywARIBNhi5PCCuHCjW9ZIDMJ_6kgM4V0ABWAFqCEVDT0xJR0hUcghXWEhYQVhCUQpBCMywARIEMzI4MhiuHCCPmgEoiPuSAzDx-5IDOFdAAVgBaghFQ09MSUdIVHIIV1hIWEFYQlF6CgjVggESBDMyODIKuAEKQQjMsAESBDMyODMYj5oBIK4cKJ2jlAMwhqSUAzhLQABYAWoIRUNPTElHSFRyCEtYSFBBWEJRegoI1YIBEgQzMjgzCjEIzLABEgE5GK4cILk8KIWmlAMwkqqUAzhLQAFYAWoIRUNPTElHSFRyCEtYSFBBWEJRCkAIzLABEgQxMjE4GLk8IM5cKKGvlAMwsrCUAzhLQAFYAWoIRUNPTElHSFRyCEtYSFBBWEJRegoIspgBEgQxMjE4EgoIAhABGAIqAkxYGAEiBAgBEAEoAigDKAQwCw) ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Tue, 21 Jul - Tue, 4 Aug OSL Oslo PIT Pittsburgh £563 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:OSL,to:PIT,departure:21/07/2026TANYT&leg2=from:PIT,to:OSL,departure:04/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:562.30&airProductToken=AQqxAQowCMmEARIDOTU0GM5cIIwYKIz4kgMw7fmSAzhOQABYAWoFQkFTSUNyCE5ITjdDOEJXCj0IyYQBEgQ0MDAxGIwYIKlRKJmBkwMw-YSTAzhOQAFYAWoFQkFTSUNyCE5ITjdDOEJXegoIwYIBEgQ0MDAxCj4IyYQBEgQ0Nzc5GKlRII-aASj9hZMDMOuGkwM4TkABWAFqBUJBU0lDcghOSE43QzhCV3oKCMGCARIENDc3OQqkAQo-CMmEARIENDU2ORiPmgEgqVEojJeUAzD0l5QDOE9AAFgBagVCQVNJQ3IIT0tONEM4Qld6CgjBggESBDQ1NjkKMAjJhAESAzIxMhipUSCMGCinmZQDMNqclAM4T0ABWAFqBUJBU0lDcghPS040QzhCVwowCMmEARIDOTUzGIwYIM5cKOOelAMwxKCUAzhPQAFYAWoFQkFTSUNyCE9LTjRDOEJXEgoIAhABGAIqAklCGAEiBAgBEAEoAigDKAQwDQ) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-uk-fr-de.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Holiday Sale Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save. [Book now](https://expedia.co.uk/cheap-deals?rfrr=FTG_SPRING_PROMO_) ## Travel information | Origin airport | Gardermoen | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Pittsburgh Intl. | | Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic | | Return price | £479 | | Distance | 6225 km | ## Book with confidence # Compare flights from Oslo to Pittsburgh easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Oslo to Pittsburgh. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Pittsburgh Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Gardermoen to Pittsburgh Intl.. To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. Grab a great deal on your flight from Gardermoen (OSL) to Pittsburgh Intl. (PIT) The easiest way to view the best deals on flights from Oslo to Pittsburgh today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Gardermoen to Pittsburgh Intl. start at just £479 and range up to £563\. To find an even better deal, try - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Oslo and Pittsburgh - booking your flight during July, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper Why you should book your Oslo to Pittsburgh flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Gardermoen to Pittsburgh Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you. Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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