AirHint found the following cheapest return flights from Austin (AUS) to London (LHR) in April 2026 (see full year).

Return flights

07 Apr - 14 Apr	Spirit Airlines
13 Apr - 21 Apr	Lufthansa
07 Apr - 21 Apr	Spirit Airlines
07 Apr - 14 Apr	Finnair	direct
08 Apr - 15 Apr	Finnair	direct
06 Apr - 16 Apr	Finnair
01 Apr - 08 Apr	Finnair	direct
01 Apr - 07 Apr	Spirit Airlines
01 Apr - 07 Apr	Finnair	direct
20 Apr - 30 Apr	Finnair
13 Apr - 12 May	British Airways	direct
25 Apr - 13 May	Finnair	direct
25 Apr - 04 May	Air Canada
25 Apr - 16 May	Delta
25 Apr - 04 May	American Airlines	direct
25 Apr - 16 May	Finnair	direct

Also check the deals for one-way flights from Austin to London in April.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Austin to London in April from $596

Return flights