£288 Cheap Flights to Southwest

View £288 flight on Mon, 29 Sept 2025Opens in a new window

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Cheap round-trip flights to Southwest

Prices were available within the past 7 days and start at £288 for one-way flights and £398 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.

Icelandair
Fri, 14 Nov - Sat, 29 Nov
LGW
London
DEN
Denver
£398 Return, just found
£398
Return
just found
Select Icelandair flight, departing Fri, 14 Nov from London to Denver, returning Sat, 29 Nov, priced at £398 just found
Lufthansa
Tue, 25 Nov - Mon, 1 Dec
DUB
Dublin
DEN
Denver
£405 Return, found 23 hours ago
£405
Return
found 23 hours ago
Select Lufthansa flight, departing Tue, 25 Nov from Dublin to Denver, returning Mon, 1 Dec, priced at £405 found 23 hours ago
American Airlines
Thu, 16 Oct - Tue, 28 Oct
DUB
Dublin
DEN
Denver
£406 Return, found 6 hours ago
£406
Return
found 6 hours ago
Select American Airlines flight, departing Thu, 16 Oct from Dublin to Denver, returning Tue, 28 Oct, priced at £406 found 6 hours ago
Aer Lingus
Fri, 19 Sept - Sun, 5 Oct
DUB
Dublin
DEN
Denver
£412 Return, found 18 hours ago
£412
Return
found 18 hours ago
Select Aer Lingus flight, departing Fri, 19 Sept from Dublin to Denver, returning Sun, 5 Oct, priced at £412 found 18 hours ago
Air Canada
Fri, 19 Sept - Thu, 2 Oct
DUB
Dublin
DEN
Denver
£412 Return, found 7 hours ago
£412
Return
found 7 hours ago
Select Air Canada flight, departing Fri, 19 Sept from Dublin to Denver, returning Thu, 2 Oct, priced at £412 found 7 hours ago

Find the cheapest month to fly from Columbus (CMH) to Denver (DEN)

November is typically the cheapest month to fly

From £85 - £273 per traveller.

Expedia flights to Southwest

Searching for cheap flights to Southwest? No travel company presents more choices than Expedia if you're looking to compare flights to Southwest. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Denver. Expedia provides the cheapest flights to many destinations in Denver and you may find even greater savings if you combine your flight with a hotel stay in Southwest.

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 Southwest 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 Southwest 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.

Frequently asked questions

How do I find cheap flights to Southwest that have flexible change policies?
By using our convenient "No change fee" filter, that's how. Simply type in your dates and other details, click "Search," then select the box below the "Flexible change policies" subheading (look to the left of your screen). Expedia makes it simple to find cheap, flexible airfares to Southwest.
Which airlines fly to Southwest?
Book a seat with one of these airlines and dynamic Southwest will be all yours to discover:

  • United Airlines - 13,033 flights to or near Southwest each month, including 13,033 flights to Denver Intl. Airport (DEN) per month.
  • Southwest Airlines - 6,339 flights to or near Southwest each month, including 6,339 flights to Denver Intl. Airport (DEN) per month.
  • Frontier Airlines - 1,967 flights to or near Southwest each month, including 1,967 flights to Denver Intl. Airport (DEN) per month.

How can I find cheap tickets to Southwest?
You'll always walk away with an epic deal with Expedia, but our "flexible dates" feature makes it that much easier. Enter your preferred flight date, then check the flexible dates box above to see the cheapest prices for nearby days. £398 was the best price for a flight to Southwest in the last seven days.
How much is a flight to Southwest?
One-way flights departing from London (LGW) sold for just £288 in the last seven days. During this time, the cost of a round-trip fare to Southwest varied between £398 and £412. If you spot a deal, grab it quickly — these fares don't stick around.
What are the most popular airports to fly into in Southwest?
Jet into Denver Intl. Airport (DEN) and enjoy all that Southwest has to offer. As the region's primary entry point, about 24,249 flights touch down here every month.
When is the cheapest time to fly to Southwest?
If you'd rather spend your money enjoying the best of Southwest rather than on flying there, jet off earlier in the week. The most cost-effective day to travel is normally Tuesday, with Monday a close second. With many folks travelling over the weekend, Saturday often has the highest airfares.
How much is a plane ticket to Southwest?
In the last seven days, fares to Southwest cost between £398 and £412. Prices usually rise as your travel date nears, so find a cheap flight today.
What months are the cheapest to book a flight to Southwest?
The perfect month to purchase well-priced airfares to Southwest is February. It's worth noting that in the USA, the most expensive time to reserve a ticket is the festive month of December.
Flights to Southwest information
Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Return price
£398

Trending flights to Southwest

Prices were available within the past 7 days and start at £288 for one-way flights and £398 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.

Icelandair
Fri, 14 Nov - Sat, 29 Nov
LGW
London
DEN
Denver
£398 Return, just found
£398
Return
just found
Select Icelandair flight, departing Fri, 14 Nov from London to Denver, returning Sat, 29 Nov, priced at £398 just found
*Available to Expedia members.