Title: Cheap Flights from Ulsan to Seoul (USN to GMP) - Expedia.co.uk ![](https://images.trvl-media.com/place/178308/0f4f99b6-31cf-474b-8e82-69823a56dfad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178308/0f4f99b6-31cf-474b-8e82-69823a56dfad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Ulsan (USN) to Seoul (GMP) ## Popular airlines from Ulsan (USN) to Gimpo Intl. Airport (GMP) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KE.svg) Korean Air [](https://www.expedia.co.uk/Flights-Search?leg1=from:USN,to:GMP,departure:04/04/2026TANYT&leg2=from:GMP,to:USN,departure:11/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KE"}}]) - ![](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 Ulsan (USN) to Seoul (GMP) Prices were available within the past 7 days and start at for one-way flights and £141 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Korean Air](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/ke.gif) Wed, 16 Sept - Wed, 23 Sept USN Ulsan GMP Seoul £141 Return found 6 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:USN,to:GMP,departure:16/09/2026TANYT&leg2=from:GMP,to:USN,departure:23/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:141.00&airProductToken=AQolCiMIy4oBEgQxODQ4GNRsIIZ7KNf4lwMwk_mXAzhZQABYAXIBWQolCiMIy4oBEgQxODQzGIZ7INRsKJzBmAMw2MGYAzhZQABYAXIBWRIKCAEQARgBKgJLRRgBIgQIARABKAIoBCgGMAE) ## Frequently asked questions ### How much is a flight from USN to Gimpo Intl. Airport (GMP)? ### Do I need to pay a cancellation fee if I cancel my flight from USN to Gimpo Airport? ### How do I find cheap flights from Ulsan Airport (USN) to Gimpo Intl. Airport (GMP) that have flexible change policies? ### How far is the flight from USN to GMP? ### Which airlines fly direct from USN to GMP? ### Are USN to Gimpo Airport flight tickets cheaper when they're purchased at the last minute? ## Travel information | Origin airport | Ulsan | | ------------------- | ----------- | | Destination airport | Gimpo Intl. | | Return price | £141 | | Distance | 313 km | | 0 | | ## Book with confidence # Compare flights from Ulsan to Seoul easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ulsan to Seoul. Operating between them flights per day, 1 airlines cover the route. And fly direct, getting you to Gimpo Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Ulsan to Gimpo 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 Ulsan (USN) to Gimpo Intl. (GMP) The easiest way to view the best deals on flights from Ulsan to Seoul 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 Ulsan to Gimpo Intl. start at just £141 and range up to £141\. To find an even better deal, try - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Ulsan and Seoul - booking your flight during September, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper Why you should book your Ulsan to Seoul flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Ulsan to Gimpo 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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