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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

British Airways Flight 274 Route Deals From $338

The cheapest prices found with in the last 7 days for return flights were $764 and $338 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 5 - Wed, Oct 21
LAS
Harry Reid Intl.
LHR
Heathrow
$764 Roundtrip, just found
$764
Roundtrip
just found
Select British Airways flight, departing Mon, Oct 5 from Harry Reid Intl. to Heathrow, returning Wed, Oct 21, priced at $764 just found
Mon, Oct 5 - Wed, Oct 21
LAS
Harry Reid Intl.
LHR
Heathrow
$768 Roundtrip, just found
$768
Roundtrip
just found
Select British Airways flight, departing Mon, Oct 5 from Harry Reid Intl. to Heathrow, returning Wed, Oct 21, priced at $768 just found
Tue, May 4 - Tue, May 11
LAS
Harry Reid Intl.
LHR
Heathrow
$773 Roundtrip, found 1 day ago
$773
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, May 4 from Harry Reid Intl. to Heathrow, returning Tue, May 11, priced at $773 found 1 day ago
Mon, Oct 5 - Wed, Oct 21
LAS
Harry Reid Intl.
LHR
Heathrow
$774 Roundtrip, just found
$774
Roundtrip
just found
Select British Airways flight, departing Mon, Oct 5 from Harry Reid Intl. to Heathrow, returning Wed, Oct 21, priced at $774 just found
Tue, Dec 1 - Tue, Dec 8
LAS
Harry Reid Intl.
LHR
Heathrow
$775 Roundtrip, found 2 days ago
$775
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Tue, Dec 8, priced at $775 found 2 days ago
Wed, Nov 25 - Thu, Dec 3
LAS
Harry Reid Intl.
LHR
Heathrow
$776 Roundtrip, found 4 days ago
$776
Roundtrip
found 4 days ago
Select British Airways flight, departing Wed, Nov 25 from Harry Reid Intl. to Heathrow, returning Thu, Dec 3, priced at $776 found 4 days ago
Tue, May 4 - Tue, May 11
LAS
Harry Reid Intl.
LHR
Heathrow
$778 Roundtrip, found 1 day ago
$778
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, May 4 from Harry Reid Intl. to Heathrow, returning Tue, May 11, priced at $778 found 1 day ago
Tue, Jan 12 - Wed, Jan 20
LAS
Harry Reid Intl.
LHR
Heathrow
$783 Roundtrip, just found
$783
Roundtrip
just found
Select British Airways flight, departing Tue, Jan 12 from Harry Reid Intl. to Heathrow, returning Wed, Jan 20, priced at $783 just found
Thu, Jan 14 - Tue, Jan 19
LAS
Harry Reid Intl.
LHR
Heathrow
$819 Roundtrip, just found
$819
Roundtrip
just found
Select British Airways flight, departing Thu, Jan 14 from Harry Reid Intl. to Heathrow, returning Tue, Jan 19, priced at $819 just found

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.