United Flight UA277 Deals & Information (2025/2026)

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United Flight 277 Route Deals From $29

The cheapest prices found with in the last 7 days for return flights were $89 and $29 for one-way flights to San Francisco Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 11 - Fri, Aug 22
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$89 Roundtrip, found 10 hours ago
$89
Roundtrip
found 10 hours ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Fri, Aug 22, priced at $89 found 10 hours ago
Mon, Aug 4 - Sat, Aug 9
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$92 Roundtrip, found 13 hours ago
$92
Roundtrip
found 13 hours ago
Select United flight, departing Mon, Aug 4 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Sat, Aug 9, priced at $92 found 13 hours ago
Mon, Aug 4 - Sat, Aug 9
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$97 Roundtrip, found 13 hours ago
$97
Roundtrip
found 13 hours ago
Select United flight, departing Mon, Aug 4 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Sat, Aug 9, priced at $97 found 13 hours ago
Mon, Aug 11 - Thu, Aug 14
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$105 Roundtrip, found 5 days ago
$105
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Thu, Aug 14, priced at $105 found 5 days ago
Tue, Jul 22 - Wed, Jul 23
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$106 Roundtrip, found 16 hours ago
$106
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Jul 22 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Wed, Jul 23, priced at $106 found 16 hours ago
Mon, Aug 11 - Fri, Aug 22
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$110 Roundtrip, found 10 hours ago
$110
Roundtrip
found 10 hours ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Fri, Aug 22, priced at $110 found 10 hours ago
Tue, Jul 22 - Wed, Jul 23
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$119 Roundtrip, found 16 hours ago
$119
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Jul 22 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Wed, Jul 23, priced at $119 found 16 hours ago
Mon, Aug 11 - Fri, Aug 22
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$129 Roundtrip, found 10 hours ago
$129
Roundtrip
found 10 hours ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Fri, Aug 22, priced at $129 found 10 hours ago
Mon, Aug 11 - Thu, Aug 14
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$131 Roundtrip, found 5 days ago
$131
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Thu, Aug 14, priced at $131 found 5 days ago
Mon, Aug 4 - Sat, Aug 9
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$137 Roundtrip, found 13 hours ago
$137
Roundtrip
found 13 hours ago
Select United flight, departing Mon, Aug 4 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Sat, Aug 9, priced at $137 found 13 hours ago
Mon, Aug 11 - Thu, Aug 14
ONT
Los Angeles - Ontario Intl.
SFO
San Francisco Intl.
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 11 from Los Angeles - Ontario Intl. to San Francisco Intl., returning Thu, Aug 14, priced at $137 found 5 days ago

Frequently asked questions

What route does flight number UA277 take?
UA277 flies direct between Washington Dulles Intl. Airport (IAD) and San Francisco Intl. Airport (SFO) in about 5 hours and 35 minutes. It can be used on other routes though, some of which could be multi-stop trips. Keep this in mind when locking in your seat to avoid any mix-ups.
What kind of plane is on flight number UA277?
There's a strong chance you'll be heading off on a Boeing 737-900 if you're flying from Washington, DC Airport (IAD-Washington Dulles Intl.) to San Francisco, CA Airport (SFO-San Francisco Intl.), one of several routes used for flight UA277.
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 UA277 flight with Travelocity, please visit our Customer Service Portal.