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Cheap Southwest flights

LHR
8 Feb — 15 Feb1
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 9 January 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£48

Most Popular Route

SFO to LAX

Shortest flight

1h 25m

Longest Flight

10h 40m
Flying from San Diego to Phoenix Sky Harbor Intl
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Flying from San Francisco to Los Angeles
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Flying from San Diego to Las Vegas Harry Reid Intl
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Flying from Providence-TFGreen to Miami
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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 9 January 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
4,248 reviews
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Overview

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Food

7.0

Frequently asked questions about Southwest

  • What are the most popular Southwest airports?

    The most popular airports for Southwest are Dallas Love Field, Houston Hobby, and Phoenix Sky Harbor 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 San Diego to Phoenix Sky Harbor Intl, which is £48. This round-trip flight has 0 stops. For a one-way domestic Southwest flight, the cheapest route is San Diego to Denver Intl (0 stops) for £25.

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