United Flight 4506 Deals & Information (2025/2026)

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United Flight 4506 Route Deals From $92

The cheapest prices found with in the last 7 days for return flights were $182 and $92 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 26 - Tue, Sep 2
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$182 Roundtrip, found 5 days ago
$182
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Tue, Sep 2, priced at $182 found 5 days ago
Sat, Aug 9 - Sat, Aug 16
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$190 Roundtrip, found 3 days ago
$190
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 9 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sat, Aug 16, priced at $190 found 3 days ago
Tue, Aug 26 - Tue, Sep 2
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$192 Roundtrip, found 5 days ago
$192
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Tue, Sep 2, priced at $192 found 5 days ago
Sat, Aug 9 - Sun, Aug 17
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$204 Roundtrip, found 3 days ago
$204
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 9 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sun, Aug 17, priced at $204 found 3 days ago
Wed, Sep 24 - Sat, Sep 27
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$206 Roundtrip, found 4 days ago
$206
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sat, Sep 27, priced at $206 found 4 days ago
Sat, Aug 9 - Sun, Aug 17
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$214 Roundtrip, found 3 days ago
$214
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 9 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sun, Aug 17, priced at $214 found 3 days ago
Wed, Sep 24 - Sat, Sep 27
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$216 Roundtrip, found 4 days ago
$216
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sat, Sep 27, priced at $216 found 4 days ago
Thu, Aug 14 - Mon, Aug 18
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$218 Roundtrip, found 5 days ago
$218
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Mon, Aug 18, priced at $218 found 5 days ago
Wed, Sep 24 - Sat, Sep 27
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sat, Sep 27, priced at $219 found 4 days ago
Wed, Sep 24 - Sat, Sep 27
STL
Lambert-St. Louis Intl.
IAD
Washington Dulles Intl.
$221 Roundtrip, found 4 days ago
$221
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 24 from Lambert-St. Louis Intl. to Washington Dulles Intl., returning Sat, Sep 27, priced at $221 found 4 days ago

Frequently asked questions

What route does flight number UA4506 take?
UA4506 takes multiple routes. The most frequently flown is between Buffalo, NY Airport (BUF-Buffalo Niagara Intl.) and O'Hare Airport, which flies direct. This flight takes about 1 hour and 45 minutes. However, there may possibly be other flights with this number that have one or more stops.
What kind of plane is on flight number UA4506?
It's likely you'll be climbing aboard a Canadair (Bombardier) Regional Jet 550 if you've reserved a seat on flight UA4506 from Buffalo Niagara International Airport to ORD. It's the most commonly used type of plane on this popular route.
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 UA4506 flight with Travelocity, please visit our Customer Service Portal.