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Cheap Southwest flights

LHR
5 Mar — 12 Mar1
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 3 February 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£61

Most Popular Route

SFO to LAX

Shortest flight

0h 45m

Longest Flight

9h 45m
Flying from Los Angeles to Las Vegas Harry Reid Intl
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Flying from San Francisco to Los Angeles
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Flying from Kona Intl to Kahului
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Flying from Fort Lauderdale to Washington, D.C. Reagan-National
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Southwest Reviews

Read reviews and feedback from other travellers about their experiences with Southwest sourced from user searches. These reviews were last updated on 3 February 2026 and provide insights based on users' experiences. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Southwest
8.0
Very Good
4,272 reviews
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Overview

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Frequently asked questions about Southwest

  • What are the most popular Southwest airports?

    The most popular airports for Southwest are Phoenix Sky Harbor Intl, Dallas Love Field, and Houston Hobby 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 Los Angeles to Las Vegas Harry Reid Intl, which is £61. This round-trip flight has 0 stops. For a one-way domestic Southwest flight, the cheapest route is Chicago Midway to Lambert-St Louis (0 stops) for £29.

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