Title: Cheap Flights to San Diego de la Unión - Expedia.co.uk ![Old Franciscan church, Mision San Ignacio Kadakaaman, in San Ignacio, Baja California Sur, Mexico](https://images.trvl-media.com/place/553248635640642069/da42eb81-9764-4361-a0c7-47192e412aaa.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/553248635640642069/da42eb81-9764-4361-a0c7-47192e412aaa.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £22 Cheap Flights to San Diego de la Unión [View £22 flight on Thu, 11 Jun 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:TLC,to:QRO,departure:11/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:21.68&airProductToken=AQpfCi0I2WgSAzU2MBjzEiCvjQEo4riPAzCzuY8DOEFAAFgBagRaZXJvcgZBU0NTUzIKLgjZaBIENzUwNxivjQEgsHQop7qPAzDuuo8DOEFAAVgBagRaZXJvcgZBU0NTUzISCggBEAEYASoCWTQYASIECAEQASgCKAMoBDAN) - [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 [San Diego de la Unión Travel Guide](https://expedia.co.uk/San-Diego-De-La-Union.dx553248635640642069)[Hotels in San Diego de la Unión](https://expedia.co.uk/San-Diego-De-La-Union-Hotels.d553248635640642069.Travel-Guide-Hotels)[San Diego de la Unión Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-San-Diego-De-La-Union.d553248635640642069.Car-Hire-Guide)[San Diego de la Unión Holidays](https://expedia.co.uk/San-Diego-De-La-Union.d553248635640642069.Holidays-City-Breaks) ## Popular airlines to San Diego de la Unión - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AM.svg) Aeromexico [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AM"}}]) - ![](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:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VB.svg) Viva Aerobus [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VB"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_Y4.svg) Volaris [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"Y4"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:San Diego de la Unión, Guanajuato, Mexico,departure:12/03/2026TANYT&leg2=from:San Diego de la Unión, Guanajuato, Mexico,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](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 round-trip flights to San Diego de la Unión Prices were available within the past 7 days and start at £22 for one-way flights and £46 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Volaris](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/Y4.gif) Sat, 28 Mar - Sun, 5 Apr MTY Monterrey QRO Querétaro £46 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:MTY,to:QRO,departure:28/03/2026TANYT&leg2=from:QRO,to:MTY,departure:05/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:45.77&airProductToken=AQowCi4I2WgSBDU1NTQY7MQBILB0KKnwiAMw-fCIAzhOQABYAWoEWmVyb3IGTkhPVEExCjAKLgjZaBIENTU1MxiwdCDsxAEo2cSJAzCrxYkDOE5AAFgBagRaZXJvcgZOSE9UQTISCggBEAEYASoCWTQYASIECAEQASgCKAMoBDAN) ![Aeromexico](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/am.gif) Mon, 16 Mar - Mon, 23 Mar MTY Monterrey QRO Querétaro £59 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:MTY,to:QRO,departure:16/03/2026TANYT&leg2=from:QRO,to:MTY,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:58.60&airProductToken=AQpoCjIIwZoBEgM5NTkY7MQBIIy5ASjs6YcDMNjqhwM4VkAAWAFqBUxJR0hUcghSTE5HMkFMVAoyCMGaARIEMjQ2MBiMuQEgsHQot_CHAzD58IcDOFZAAVgBagVMSUdIVHIIUkxORzJBTFQKaAoyCMGaARIEMjQ2NxiwdCCMuQEo3reIAzCsuIgDOFZAAFgBagVMSUdIVHIIUkxORzJBTFQKMgjBmgESAzk2NBiMuQEg7MQBKJW5iAMwg7qIAzhWQAFYAWoFTElHSFRyCFJMTkcyQUxUEgoIARABGAEqAkFNGAEiBAgBEAEoAigDKAQwAQ) ![Viva](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/vb.gif) Tue, 23 Jun - Tue, 30 Jun NLU Mexico City BJX León £109 Return found 19 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:NLU,to:BJX,departure:23/06/2026TANYT&leg2=from:BJX,to:NLU,departure:30/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:108.30&airProductToken=AQokCiII1oQBEgQ3MzQ1GO2iASChugEol8CQAzDTwJADOFpAAFgBCiQKIgjWhAESBDczNDQYoboBIO2iASjTi5EDMIqMkQM4WkAAWAESCggBEAEYASoCVkIYASIECAEQASgEMAE) ![Hahn Air Technologies](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/x1.gif) Sun, 15 Mar - Sun, 22 Mar NLU Mexico City SLP San Luis Potosi £398 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:NLU,to:SLP,departure:15/03/2026TANYT&leg2=from:SLP,to:NLU,departure:22/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:397.30&airProductToken=AQo1CjMI2GISBDcwNTEY7aIBIPJ6KO7chwMwyN2HAzhMQABYAXIFTFJUWlZ6CgjarAESBDcwNTEKNQozCNhiEgQ3MDUzGPJ6IO2iASiwpogDMIqniAM4TEAAWAFyBUxSVFpWegoI2qwBEgQ3MDUzEgoIARABGAEqAkhSGAEiBAgBEAEoAigDKAQwAQ) ![avianca](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/av.gif) Sun, 12 Apr - Fri, 17 Apr GUA Guatemala City QRO Querétaro £737 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:GUA,to:QRO,departure:12/04/2026TANYT&leg2=from:QRO,to:GUA,departure:17/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:736.40&airProductToken=AQqkAQovCMGsARICMzUYhgUgwTMoq5aKAzDul4oDOFBAAFgBagVMSUdIVHIIUEVPQjFCUkIKMQjBrAESAzI2NhjBMyDsxAEotp6KAzD2oIoDOFBAAVgBagVMSUdIVHIIUExSQjFCUkIKPgjBrAESBDY4MjYY7MQBILB0KP-iigMwz6OKAzhQQAFYAWoFTElHSFRyCFBMUkIxQlJCegoI1oQBEgQ2ODI2CqUBCj4IwawBEgQ2ODE5GLB0IOzEASiEy4oDMNnLigM4UEAAWAFqBUxJR0hUcghQTFJCMUJSQnoKCNaEARIENjgxOQoxCMGsARIDMjY3GOzEASDBMyjGzooDMPfQigM4UEABWAFqBUxJR0hUcghQTFJCMUJSQgowCMGsARIDMTY0GMEzIIYFKMnSigMwjNSKAzhQQAFYAWoFTElHSFRyCFBFT0IxQlJCEgoIARABGAEqAkFWGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from Columbus (CMH) to León (BJX) ### May is typically the cheapest month to fly From £388 - £534 per traveller. ![](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_) ## Frequently asked questions ### What is the name of San Diego de la Unión's airport? ### What airport is best to fly into San Diego de la Unión? ### How many airlines fly to San Diego de la Unión? ### Which airlines fly to San Diego de la Unión? ### How many nonstop flights are there to San Diego de la Unión? ### Where are the most popular flights to San Diego de la Unión departing from? ### How long is the flight to San Diego de la Unión Airport? ### How to book the cheapest flight to San Diego de la Unión? ### Do you have any tips for my flight to San Diego de la Unión? > - First of all, pack your passport, official ID, bank cards and medications. Next, you'll want some in-flight entertainment to while away the time. A thrilling novel and a laptop filled with your favourite shows are always good options. If you hope to take a short snooze, a quality neck pillow and some noise-cancelling headphones will also come in handy. Finally, find room for a toothbrush and some deodorant to ensure you arrive at your destination feeling fresh and ready to go. > > > Do not pack the following items in your hand luggage: > > > - Make sure you don't have sharp or pointed objects lurking in the bottom of your hand luggage. Other prohibited items include explosive or flammable products, such as aerosol cans and fuel, and liquids and gels in containers with a volume of more than 3.4 ounces (100 millilitres). > > > What to wear on a flight: > > > - Comfort should be your priority when deciding what to wear on your flight. Loose clothing is a sensible option, as are enclosed shoes like sneakers. > - Deep vein thrombosis (DVT) can pose a risk on long-haul flights. It results from blood clots forming due to poor circulation, so do some gentle foot and leg exercises in your seat and consider wearing compression socks or tights. ### How to get through airport security fast when flying to San Diego de la Unión? > - Your travel documents and passport will need to be inspected by airport security personnel. Have them close by to avoid fumbling around for them. > - The X-ray machine is up next. Remove anything metal on you that is likely to set off the alarm. This includes things like headphones or earphones, as well as heavy jackets or coats. They'll all need to go on the X-ray conveyor belt. > - For just a few minutes, you'll need to unplug from the digital world. Your laptop, phone and any other electronics also need to go through the scanner. > - Remove all liquids and gels from your carry-on luggage. They often need to be sent through the X-ray separately. Each item should be no larger than 3.4 ounces (100 millilitres) and everything must fit inside a quart-size (one litre), clear zip-close bag. > - Lightweight sneakers are a sensible footwear choice as you're less likely to be asked to remove them when going through security. Boots and heavier-style shoes are often subjected to extra screening. > - Sharp items such as knives and scissors are not allowed in the cabin. They'll be seized at security, so put them in your checked luggage. ## Book with confidence # Expedia flights to San Diego de la Unión Searching for cheap flights to San Diego de la Unión? No travel company presents more choices than Expedia if you're looking to compare flights to San Diego de la Unión. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Guanajuato. Expedia provides the cheapest flights to many destinations in Guanajuato and you may find even greater savings if you combine your flight with a hotel stay in San Diego de la Unión. Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast. Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to San Diego de la Unión for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your San Diego de la Unión flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price. ## Travel information | Destination airport | Querétaro Intl. | | ----------------------------- | --------------- | | Destination airport IATA code | QRO | | Destination city name | Querétaro | | Return price | £64 | ## Trending flights to San Diego de la Unión Prices were available within the past 7 days and start at £22 for one-way flights and £46 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, 11 Apr - Mon, 27 Apr LHR London QRO Querétaro £749 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:QRO,departure:11/04/2026TANYT&leg2=from:QRO,to:LHR,departure:27/04/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:748.89&airProductToken=AQpECiAI1YIBEgM4NzkY64kBIIg4KPyFigMw7YqKAzhLQABYAQogCNWCARIEMTIwMBiIOCCwdCjxjIoDMPCNigM4S0ABWAEKRAogCNWCARIEMjA3ORiwdCCIOCiEvosDMIO_iwM4S0AAWAEKIAjVggESAzg4MBiIOCDriQEo4L-LAzCQxIsDOEtAAVgBEgoIARABGAEqAlVBGAEiBAgBEAEoBDAB) \*Available to Expedia members.