AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Keflavik (KEF) in March 2026 (see full year).

Return flights

16 Mar - 23 Mar	British Airways
15 Mar - 23 Mar	British Airways
16 Mar - 24 Mar	British Airways
17 Mar - 24 Mar	British Airways
17 Mar - 25 Mar	Finnair
31 Mar - 07 Apr	Finnair
29 Mar - 05 Apr	Virgin Atlantic
04 Mar - 12 Mar	British Airways
08 Mar - 16 Mar	British Airways
09 Mar - 17 Mar	British Airways
10 Mar - 18 Mar	British Airways
18 Mar - 26 Mar	British Airways
30 Mar - 06 Apr	Finnair

Also check the deals for one-way flights from Dallas-Fort Worth to Keflavik 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 Dallas-Fort Worth to Keflavik in March from 496€

Return flights