American Airlines Flight 20 Deals & Information (2026/2027)

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American Airlines Flight 20 Route Deals From $423

The cheapest prices found with in the last 7 days for return flights were $638 and $423 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Feb 4 - Mon, Mar 9
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$638 Roundtrip, found 3 hours ago
$638
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Feb 4 from Dallas-Fort Worth Intl. to Heathrow, returning Mon, Mar 9, priced at $638 found 3 hours ago
Mon, Mar 2 - Thu, Mar 12
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$641 Roundtrip, found 16 hours ago
$641
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Mon, Mar 2 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, Mar 12, priced at $641 found 16 hours ago
Wed, Feb 4 - Mon, Mar 9
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$643 Roundtrip, found 3 hours ago
$643
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Feb 4 from Dallas-Fort Worth Intl. to Heathrow, returning Mon, Mar 9, priced at $643 found 3 hours ago
Wed, Feb 4 - Mon, Mar 9
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$645 Roundtrip, found 3 hours ago
$645
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Feb 4 from Dallas-Fort Worth Intl. to Heathrow, returning Mon, Mar 9, priced at $645 found 3 hours ago
Sun, Aug 9 - Fri, Aug 21
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$652 Roundtrip, found 2 hours ago
$652
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sun, Aug 9 from Dallas-Fort Worth Intl. to Heathrow, returning Fri, Aug 21, priced at $652 found 2 hours ago
Mon, Mar 2 - Thu, Mar 12
DFW
Dallas-Fort Worth Intl.
LHR
Heathrow
$654 Roundtrip, found 16 hours ago
$654
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Mon, Mar 2 from Dallas-Fort Worth Intl. to Heathrow, returning Thu, Mar 12, priced at $654 found 16 hours ago