United Flight UA539 Deals & Information (2025/2026)

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United Flight 539 Route Deals From $56

The cheapest prices found with in the last 7 days for return flights were $111 and $56 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 23 - Mon, Oct 27
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$111 Roundtrip, just found
$111
Roundtrip
just found
Select United flight, departing Thu, Oct 23 from Logan Intl. to Washington Dulles Intl., returning Mon, Oct 27, priced at $111 just found
Fri, Oct 24 - Mon, Oct 27
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$139 Roundtrip, just found
$139
Roundtrip
just found
Select United flight, departing Fri, Oct 24 from Logan Intl. to Washington Dulles Intl., returning Mon, Oct 27, priced at $139 just found
Thu, Oct 23 - Mon, Oct 27
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$146 Roundtrip, just found
$146
Roundtrip
just found
Select United flight, departing Thu, Oct 23 from Logan Intl. to Washington Dulles Intl., returning Mon, Oct 27, priced at $146 just found
Tue, Sep 2 - Wed, Sep 3
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$147 Roundtrip, found 6 days ago
$147
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 2 from Logan Intl. to Washington Dulles Intl., returning Wed, Sep 3, priced at $147 found 6 days ago
Tue, Nov 11 - Thu, Nov 13
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$150 Roundtrip, found 18 hours ago
$150
Roundtrip
found 18 hours ago
Select United flight, departing Tue, Nov 11 from Logan Intl. to Washington Dulles Intl., returning Thu, Nov 13, priced at $150 found 18 hours ago
Tue, Sep 2 - Wed, Sep 3
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$157 Roundtrip, found 6 days ago
$157
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 2 from Logan Intl. to Washington Dulles Intl., returning Wed, Sep 3, priced at $157 found 6 days ago
Thu, Oct 23 - Mon, Oct 27
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$159 Roundtrip, just found
$159
Roundtrip
just found
Select United flight, departing Thu, Oct 23 from Logan Intl. to Washington Dulles Intl., returning Mon, Oct 27, priced at $159 just found
Thu, Oct 23 - Mon, Oct 27
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$161 Roundtrip, just found
$161
Roundtrip
just found
Select United flight, departing Thu, Oct 23 from Logan Intl. to Washington Dulles Intl., returning Mon, Oct 27, priced at $161 just found
Sat, Sep 6 - Tue, Sep 9
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$163 Roundtrip, found 3 days ago
$163
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 6 from Logan Intl. to Washington Dulles Intl., returning Tue, Sep 9, priced at $163 found 3 days ago
Fri, Aug 29 - Mon, Sep 1
BOS
Logan Intl.
IAD
Washington Dulles Intl.
$163 Roundtrip, found 13 hours ago
$163
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Aug 29 from Logan Intl. to Washington Dulles Intl., returning Mon, Sep 1, priced at $163 found 13 hours ago

Frequently asked questions

What route does flight number UA539 take?
UA539 serves multiple routes, but the most common is between San Francisco Intl. Airport (SFO) and Kahului Airport. If you manage to score a direct flight, you'll disembark the plane in approximately 5 hours and 25 minutes. Multi-stop flights can also travel under this number, as can flights on other routes.
What terminal does UA539 fly out of?
You'll likely board the plane from Terminal 3 if you're booked on a flight out of San Francisco, CA Airport (SFO-San Francisco Intl.). UA539 serves a number of different routes, but the direct flight between San Francisco, CA Airport (SFO-San Francisco Intl.) and Kahului, HI Airport (OGG) is the most frequently traveled.
What kind of plane is on flight number UA539?
UA539 is a flight number that serves many different routes. If you're booked on the most common route, San Francisco, CA Airport (SFO-San Francisco Intl.) to Kahului, HI Airport (OGG), you'll likely be climbing aboard a Boeing 737-800.
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 UA539 flight with Travelocity, please visit our Customer Service Portal.