Find flights
Deals
Reviews
FAQs
Flight Tracker

Cheap Southwest flights

LHR
26 Jun — 3 Jul1
1 adult
1 adult, Economy, 0 bags

Southwest information

Discover detailed information about Southwest flights, including average fare prices, reviews, and more. Flight info is based on data from user searches last updated on 27 May 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£87

Most Popular Route

DEN to LAX

Shortest flight

0h 55m

Longest Flight

11h 45m
Flying from Atlanta Hartsfield-Jackson to Lambert-St Louis
Search Deals
Flying from Denver Intl to Los Angeles
Search Deals
Flying from Knoxville McGhee Tyson to Nashville Intl
Search Deals
Flying from Washington, D.C. Reagan-National to Atlanta Hartsfield-Jackson
Search Deals

Find Southwest flight deals

Enter your travel dates to find the best prices.

International Southwest flights
Search for international Southwest flight options. Find affordable international airfare based on user searches. Data last updated 27 May 2026.

Mon 6/708:25
CMH
-
CUN
Nonstop3h 20m
Southwest
Fri 10/711:45
CUN
-
CMH
Nonstop3h 15m
Southwest
Deal found £322
Thu 9/708:25
CMH
-
CUN
Nonstop3h 20m
Southwest
Thu 16/711:45
CUN
-
CMH
Nonstop3h 15m
Southwest
Deal found £352
Tue 7/705:00
CMH
-
CUN
1 stop9h 15m
Southwest
Sun 12/713:05
CUN
-
CMH
Nonstop3h 15m
Southwest
Deal found £355

Southwest Reviews

Read reviews and feedback from other travellers about their experiences with Southwest sourced from user searches. These reviews were last updated on 27 May 2026 and provide insights based on users' experiences. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Southwest
7.9
Good
4,265 reviews
Check prices
Overview

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Frequently asked questions about Southwest

  • What are the most popular Southwest airports?

    The most popular airports for Southwest are Phoenix Sky Harbor Intl, San Diego, and Sacramento Intl according to our data. Flights to or from any of these airports should be available via Southwest year-round.

  • What is Southwest’s cheapest domestic flight?

    The cheapest domestic Southwest flight is flying Atlanta Hartsfield-Jackson to Lambert-St Louis, which is £87. This round-trip flight has 0 stops. For a one-way domestic Southwest flight, the cheapest route is Houston Hobby to Atlanta Hartsfield-Jackson (0 stops) for £44.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Real-time Southwest flight tracker

Track Southwest flights in real-time using the flight tracker tool, providing live updates on flight schedules, departure, and arrival times.
YYYY-MM-DD

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.