British Airways Flight 274 Deals & Information (2026/2027)

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British Airways Flight 274 Route Deals From $337

The cheapest prices found with in the last 7 days for return flights were $765 and $337 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 1 - Tue, Dec 8
LAS
Harry Reid Intl.
LHR
Heathrow
$765 Roundtrip, found 10 hours ago
$765
Roundtrip
found 10 hours ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Tue, Dec 8, priced at $765 found 10 hours ago
Wed, Oct 21 - Wed, Oct 28
LAS
Harry Reid Intl.
LHR
Heathrow
$768 Roundtrip, found 5 hours ago
$768
Roundtrip
found 5 hours ago
Select British Airways flight, departing Wed, Oct 21 from Harry Reid Intl. to Heathrow, returning Wed, Oct 28, priced at $768 found 5 hours ago
Wed, Mar 24 - Tue, Mar 30
LAS
Harry Reid Intl.
LHR
Heathrow
$770 Roundtrip, found 9 hours ago
$770
Roundtrip
found 9 hours ago
Select British Airways flight, departing Wed, Mar 24 from Harry Reid Intl. to Heathrow, returning Tue, Mar 30, priced at $770 found 9 hours ago
Tue, Dec 1 - Tue, Dec 8
LAS
Harry Reid Intl.
LHR
Heathrow
$775 Roundtrip, found 10 hours ago
$775
Roundtrip
found 10 hours ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Tue, Dec 8, priced at $775 found 10 hours ago
Wed, Nov 25 - Thu, Dec 3
LAS
Harry Reid Intl.
LHR
Heathrow
$776 Roundtrip, found 2 days ago
$776
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, Nov 25 from Harry Reid Intl. to Heathrow, returning Thu, Dec 3, priced at $776 found 2 days ago
Wed, Oct 21 - Wed, Oct 28
LAS
Harry Reid Intl.
LHR
Heathrow
$779 Roundtrip, found 5 hours ago
$779
Roundtrip
found 5 hours ago
Select British Airways flight, departing Wed, Oct 21 from Harry Reid Intl. to Heathrow, returning Wed, Oct 28, priced at $779 found 5 hours ago
Tue, Dec 1 - Tue, Dec 8
LAS
Harry Reid Intl.
LHR
Heathrow
$780 Roundtrip, found 10 hours ago
$780
Roundtrip
found 10 hours ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Tue, Dec 8, priced at $780 found 10 hours ago

Frequently asked questions

What route does flight number BA274 take?
BA274 jets between McCarran Intl. Airport (LAS) and LHR and is a direct flight. This service generally takes 10 hours and 15 minutes.
How often is BA274 on time?
People flying on British Airways flight number BA274 should be aware that 70% of these flights take off on schedule. If you encounter a delay, the typical wait time is approximately 36 minutes. This service has a 0.45-star rating.
What terminal does BA274 fly out of?
Flights between Las Vegas, NV Airport (LAS-McCarran Intl.) and London Airport (LHR-Heathrow) are served by BA274, and passengers who travel on this route usually take off from Terminal 3.
What kind of plane is on flight number BA274?
You're likely to find yourself traveling aboard a Boeing 777 if you're on flight number BA274. This flight almost always leaves from McCarran Intl. Airport (LAS) and touches down at London Airport (LHR-Heathrow).
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your BA274 flight with Travelocity, please visit our Customer Service Portal.