United Flight 4531 Deals & Information (2026/2027)

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United Flight 4531 Route Deals From $216

The cheapest prices found with in the last 7 days for return flights were $171 and $216 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 3 - Sat, Nov 7
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$171 Roundtrip, found 2 days ago
$171
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sat, Nov 7, priced at $171 found 2 days ago
Tue, Nov 3 - Sat, Nov 7
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$261 Roundtrip, found 2 days ago
$261
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sat, Nov 7, priced at $261 found 2 days ago
Tue, Nov 3 - Sat, Nov 7
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$337 Roundtrip, found 2 days ago
$337
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sat, Nov 7, priced at $337 found 2 days ago
Thu, Dec 3 - Sun, Dec 6
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$343 Roundtrip, found 18 hours ago
$343
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Dec 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Dec 6, priced at $343 found 18 hours ago
Tue, Nov 3 - Sat, Nov 7
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$413 Roundtrip, found 2 days ago
$413
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sat, Nov 7, priced at $413 found 2 days ago
Fri, Oct 23 - Mon, Oct 26
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$419 Roundtrip, found 7 hours ago
$419
Roundtrip
found 7 hours ago
Select United flight, departing Fri, Oct 23 from Manchester-Boston Regional to Washington Dulles Intl., returning Mon, Oct 26, priced at $419 found 7 hours ago
Thu, Dec 3 - Sun, Dec 6
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$433 Roundtrip, found 18 hours ago
$433
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Dec 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Dec 6, priced at $433 found 18 hours ago
Sun, Nov 8 - Tue, Nov 10
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$439 Roundtrip, found 1 day ago
$439
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 8 from Manchester-Boston Regional to Washington Dulles Intl., returning Tue, Nov 10, priced at $439 found 1 day ago
Wed, Dec 23 - Thu, Dec 24
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$475 Roundtrip, found 3 days ago
$475
Roundtrip
found 3 days ago
Select United flight, departing Wed, Dec 23 from Manchester-Boston Regional to Washington Dulles Intl., returning Thu, Dec 24, priced at $475 found 3 days ago
Thu, Dec 3 - Sun, Dec 6
MHT
Manchester-Boston Regional
IAD
Washington Dulles Intl.
$486 Roundtrip, found 18 hours ago
$486
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Dec 3 from Manchester-Boston Regional to Washington Dulles Intl., returning Sun, Dec 6, priced at $486 found 18 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.