Cheap Flights to Southwest

View ₩225,800 flight on Thu, Jul 16, 2026Opens in a new window

Flight 1

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How much is the cheapest flight to Southwest?

Prices were available within the past 7 days and start at ₩225,800 for one-way flights and ₩432,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, May 18 - Tue, May 19
IAH
Houston
DEN
Denver
₩432,300 Roundtrip, found 1 day ago
₩432,300
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, May 18 from Houston to Denver, returning Tue, May 19, priced at ₩432,300 found 1 day ago
United
Sun, May 17 - Tue, May 19
IAH
Houston
DEN
Denver
₩529,100 Roundtrip, found 1 day ago
₩529,100
Roundtrip
found 1 day ago
Select United flight, departing Sun, May 17 from Houston to Denver, returning Tue, May 19, priced at ₩529,100 found 1 day ago
American Airlines
Fri, Jul 24 - Sat, Jul 25
FAR
Fargo
DEN
Denver
₩604,200 Roundtrip, found 1 day ago
₩604,200
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jul 24 from Fargo to Denver, returning Sat, Jul 25, priced at ₩604,200 found 1 day ago
Alaska Airlines
Sat, May 16 - Sun, Aug 9
ICN
Seoul
DEN
Denver
₩1,345,200 Roundtrip, found 21 hours ago
₩1,345,200
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Sat, May 16 from Seoul to Denver, returning Sun, Aug 9, priced at ₩1,345,200 found 21 hours ago
Air Canada
Thu, Jun 11 - Tue, Jun 23
ICN
Seoul
DEN
Denver
₩1,411,300 Roundtrip, found 3 days ago
₩1,411,300
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Jun 11 from Seoul to Denver, returning Tue, Jun 23, priced at ₩1,411,300 found 3 days ago

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. ₩432,300 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 Houston (IAH) sold for just ₩225,800 in the last seven days. During this time, the cost of a round-trip fare to Southwest varied between ₩432,300 and ₩1,411,300. 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 traveling 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 ₩432,300 and ₩1,411,300. 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.

Travel information

Destination airport
Denver Intl.
Destination airport IATA code
DEN
Destination city name
Denver
Roundtrip price
₩431,400

Trending flights to Southwest

Prices were available within the past 7 days and start at ₩225,800 for one-way flights and ₩432,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 10 - Tue, Sep 15
ICN
Seoul
DEN
Denver
₩1,345,000 Roundtrip, found 6 days ago
₩1,345,000
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 10 from Seoul to Denver, returning Tue, Sep 15, priced at ₩1,345,000 found 6 days ago
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