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Cheap Allegiant Air flights

LHR
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Allegiant Air information

Discover detailed information about Allegiant Air flights, including average fare prices, reviews, and more. Flight info is based on data from user searches last updated on 17 September 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches.

Cheapest Route

£51

Most Popular Route

SHV to LAS

Shortest flight

1h 12m

Longest Flight

4h 41m
Flying from Concord Regional to Orlando Sanford Intl
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Flying from Shreveport to Las Vegas Harry Reid Intl
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Flying from Fresno Airterminal to Las Vegas Harry Reid Intl
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Flying from Cincinnati Cinci./N. Kentucky to Portland
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Allegiant Air Reviews

Read reviews and feedback from other travellers about their experiences with Allegiant Air sourced from user searches. These reviews were last updated on 17 September 2025 and provide insights based on users' experiences. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Allegiant Air
7.2
Good
699 reviews
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Overview

Comfort

6.8

Food

5.9

Crew

8.1

Entertainment

5.5

Boarding

7.6
Pros +
  • They made the flight home very enjoyable. (in 119 reviews)
  • The crew was super nice and helpful. (in 120 reviews)
  • For the price it was a very good flying experience (in 31 reviews)
Cons -
  • Fast flight! (in 173 reviews)
  • Rock hard very narrow seats. (in 104 reviews)

Frequently asked questions about Allegiant Air

  • What are the most popular Allegiant Air airports?

    The most popular airports for Allegiant Air are Asheville Regional, Fort Lauderdale, and Orlando Sanford Intl according to our data. Flights to or from any of these airports should be available via Allegiant Air year-round.

  • What is Allegiant Air’s cheapest domestic flight?

    The cheapest domestic Allegiant Air flight is flying Concord Regional to Orlando Sanford Intl, which is £51. This round-trip flight has 0 stops. For a one-way domestic Allegiant Air flight, the cheapest route is Las Vegas Harry Reid Intl to Memphis (0 stops) for £25.

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