Cheap Flights to Southwest

View ₩123,100 flight on Thu, Nov 6, 2025Opens in a new window

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How much is the cheapest flight to Southwest?

Prices were available within the past 7 days and start at ₩123,100 for one-way flights and ₩275,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Sep 29 - Tue, Oct 7
ATL
Atlanta
DEN
Denver
₩275,000 Roundtrip, found 12 hours ago
₩275,000
Roundtrip
found 12 hours ago
Select Delta flight, departing Mon, Sep 29 from Atlanta to Denver, returning Tue, Oct 7, priced at ₩275,000 found 12 hours ago
United
Mon, Sep 29 - Tue, Oct 7
ATL
Atlanta
DEN
Denver
₩330,800 Roundtrip, found 12 hours ago
₩330,800
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Sep 29 from Atlanta to Denver, returning Tue, Oct 7, priced at ₩330,800 found 12 hours ago
American Airlines
Mon, Sep 29 - Tue, Oct 7
ATL
Atlanta
DEN
Denver
₩392,900 Roundtrip, found 12 hours ago
₩392,900
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Mon, Sep 29 from Atlanta to Denver, returning Tue, Oct 7, priced at ₩392,900 found 12 hours ago
Alaska Airlines
Thu, Dec 25 - Tue, Jan 6
ICN
Seoul
DEN
Denver
₩862,400 Roundtrip, found 7 hours ago
₩862,400
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Thu, Dec 25 from Seoul to Denver, returning Tue, Jan 6, priced at ₩862,400 found 7 hours ago
Hawaiian Airlines
Thu, Jan 29 - Thu, Feb 5
ICN
Seoul
DEN
Denver
₩862,400 Roundtrip, found 3 days ago
₩862,400
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 29 from Seoul to Denver, returning Thu, Feb 5, priced at ₩862,400 found 3 days ago

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

November is typically the cheapest month to fly

From ₩161,131 - ₩529,517 per traveler.

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.

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. ₩275,000 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 Boston (BOS) sold for just ₩123,100 in the last seven days. During this time, the cost of a round-trip fare to Southwest varied between ₩275,000 and ₩862,400. 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 ₩275,000 and ₩862,400. 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
Roundtrip price
₩275,000

Trending flights to Southwest

Prices were available within the past 7 days and start at ₩123,100 for one-way flights and ₩275,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Dec 25 - Tue, Jan 6
ICN
Seoul
DEN
Denver
₩862,400 Roundtrip, found 7 hours ago
₩862,400
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Thu, Dec 25 from Seoul to Denver, returning Tue, Jan 6, priced at ₩862,400 found 7 hours ago
*Available to Expedia members.