AirHint found the following cheapest return flights from Raleigh-durham (RDU) to London (LGW) in March 2026 (see full year).

Return flights

29 Mar - 15 Apr	Frontier Airlines
03 Mar - 16 Mar	Air Canada
05 Mar - 09 Mar	Breeze Airways
30 Mar - 07 Apr	Frontier Airlines
23 Mar - 30 Mar	Air Canada
08 Mar - 16 Mar	Air Canada
07 Mar - 18 Mar	Spirit Airlines
01 Mar - 08 Mar	Spirit Airlines
14 Mar - 18 Mar	Spirit Airlines
04 Mar - 15 Mar	Spirit Airlines
19 Mar - 24 Mar	Spirit Airlines
08 Mar - 15 Mar	Air Canada
26 Mar - 04 Apr	Breeze Airways
27 Mar - 03 Apr	Spirit Airlines
28 Mar - 04 Apr	Spirit Airlines
29 Mar - 04 Apr	Spirit Airlines

Also check the deals for one-way flights from Raleigh-durham to London in March.

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 Raleigh-durham to London in March from $519

Return flights