United Flight 4531 Deals & Information (2026/2027)

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United Flight 4531 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $304 and $214 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 24 - Tue, Oct 27
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$304 Roundtrip, found 4 days ago
$304
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 24 from Manchester-Boston Regional to Washington Dulles Intl., returning Tue, Oct 27, priced at $304 found 4 days ago
Fri, Oct 16 - Sun, Oct 18
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$334 Roundtrip, found 1 day ago
$334
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 16 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Oct 18, priced at $334 found 1 day ago
Fri, Jan 8 - Sun, Jan 10
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$344 Roundtrip, found 6 days ago
$344
Roundtrip
found 6 days ago
Select United flight, departing Fri, Jan 8 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Jan 10, priced at $344 found 6 days ago
Fri, Oct 16 - Sun, Oct 18
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$359 Roundtrip, found 1 day ago
$359
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 16 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Oct 18, priced at $359 found 1 day ago
Fri, Oct 9 - Sun, Oct 11
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$374 Roundtrip, found 4 days ago
$374
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 9 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Oct 11, priced at $374 found 4 days ago
Sat, Oct 24 - Tue, Oct 27
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$394 Roundtrip, found 4 days ago
$394
Roundtrip
found 4 days ago
Select United flight, departing Sat, Oct 24 from Manchester-Boston Regional to Washington Dulles Intl., returning Tue, Oct 27, priced at $394 found 4 days ago
Fri, Oct 16 - Sun, Oct 18
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$401 Roundtrip, found 1 day ago
$401
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 16 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Oct 18, priced at $401 found 1 day ago
Fri, Oct 9 - Sun, Oct 11
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$401 Roundtrip, found 4 days ago
$401
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 9 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Oct 11, priced at $401 found 4 days ago
Wed, Nov 4 - Fri, Nov 6
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$411 Roundtrip, found 3 days ago
$411
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 4 from Manchester-Boston Regional to Washington Dulles Intl., returning Fri, Nov 6, priced at $411 found 3 days ago
Sun, Nov 8 - Tue, Nov 10
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$417 Roundtrip, found 6 hours ago
$417
Roundtrip
found 6 hours ago
Select United flight, departing Sun, Nov 8 from Manchester-Boston Regional to Washington Dulles Intl., returning Tue, Nov 10, priced at $417 found 6 hours ago

Frequently asked questions

What route does flight number UA4531 take?
UA4531 serves multiple routes, but the most common is between Pittsburgh, PA Airport (PIT-Pittsburgh Intl.) and Chicago, IL Airport (ORD-O'Hare Intl.). If your flight is direct, you'll step off the plane in roughly 1 hour and 36 minutes. Multi-stop flights can also operate under the same number, as can services on other routes.
What kind of plane is on flight number UA4531?
Chances are you'll be taking off on a Canadair (Bombardier) Regional Jet 550 if you're jetting from Pittsburgh Airport to O'Hare Airport, one of a few routes used for flight UA4531.
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 UA4531 flight with Travelocity, please visit our Customer Service Portal.