United Flight UA6178 Deals & Information (2025/2026)

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United Flight 6178 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $177 and $90 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 15 - Wed, Oct 22
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$177 Roundtrip, found 2 days ago
$177
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 15 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Wed, Oct 22, priced at $177 found 2 days ago
Sat, Aug 30 - Tue, Sep 2
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 6 days ago
$179
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 30 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 2, priced at $179 found 6 days ago
Fri, Aug 29 - Mon, Sep 1
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$180 Roundtrip, found 6 days ago
$180
Roundtrip
found 6 days ago
Select United flight, departing Fri, Aug 29 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Sep 1, priced at $180 found 6 days ago
Sat, Sep 6 - Mon, Sep 8
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$180 Roundtrip, found 21 hours ago
$180
Roundtrip
found 21 hours ago
Select United flight, departing Sat, Sep 6 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Sep 8, priced at $180 found 21 hours ago
Fri, Sep 5 - Mon, Sep 8
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$181 Roundtrip, found 1 day ago
$181
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 5 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Sep 8, priced at $181 found 1 day ago
Thu, Aug 7 - Wed, Aug 13
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 7 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Wed, Aug 13, priced at $187 found 1 day ago
Fri, Aug 8 - Wed, Aug 13
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$193 Roundtrip, found 1 day ago
$193
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 8 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Wed, Aug 13, priced at $193 found 1 day ago
Sat, Aug 30 - Tue, Sep 2
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$195 Roundtrip, found 6 days ago
$195
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 30 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 2, priced at $195 found 6 days ago
Sat, Sep 6 - Mon, Sep 8
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$196 Roundtrip, found 21 hours ago
$196
Roundtrip
found 21 hours ago
Select United flight, departing Sat, Sep 6 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Sep 8, priced at $196 found 21 hours ago
Sat, Sep 6 - Mon, Sep 8
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$197 Roundtrip, found 21 hours ago
$197
Roundtrip
found 21 hours ago
Select United flight, departing Sat, Sep 6 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Sep 8, priced at $197 found 21 hours ago
Thu, Jul 31 - Wed, Aug 6
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$204 Roundtrip, found 1 day ago
$204
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jul 31 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Wed, Aug 6, priced at $204 found 1 day ago

Frequently asked questions

What route does flight number UA6178 take?
UA6178 is used on a number of routes. Most commonly, UA6178 flies directly from Queretaro, Queretaro Airport (QRO-Queretaro Intl.) to Houston, TX Airport (IAH-George Bush Intercontinental). If that's your chosen flight path, you'll be flying for approximately 2 hours and 6 minutes.
How often is UA6178 on time?
Meeting a special someone at the airport? If you're flying with United Airlines flight number UA6178 from QRO to Houston, TX Airport (IAH-George Bush Intercontinental), this service operates as scheduled 89% of the time. On the rare occasion that it is delayed, the average time you'll wait is 4 minutes. Just one of the many reasons that this trip has a 3.85-star rating.
What kind of plane is on flight number UA6178?
UA6178 is a flight number that is used on a number of routes. If you're traveling on its most popular route, Querétaro Intercontinental Airport to George Bush Intercontinental Airport (IAH), you're likely to be hopping on board an Embraer 175.
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 UA6178 flight with Travelocity, please visit our Customer Service Portal.