United Flight 6178 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 $137 and $90 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 11 - Tue, Sep 16
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$137 Roundtrip, found 4 hours ago
$137
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Sep 11 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $137 found 4 hours ago
Thu, Sep 11 - Tue, Sep 16
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$159 Roundtrip, found 4 hours ago
$159
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Sep 11 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $159 found 4 hours ago
Thu, Aug 7 - Sun, Aug 10
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$161 Roundtrip, found 1 day ago
$161
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 7 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Aug 10, priced at $161 found 1 day ago
Thu, Sep 11 - Tue, Sep 16
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$180 Roundtrip, found 4 hours ago
$180
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Sep 11 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $180 found 4 hours ago
Thu, Jul 17 - Mon, Jul 21
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$183 Roundtrip, found 4 days ago
$183
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 17 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Jul 21, priced at $183 found 4 days ago
Thu, Aug 7 - Sun, Aug 10
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$183 Roundtrip, found 1 day ago
$183
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 7 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Sun, Aug 10, priced at $183 found 1 day ago
Fri, Jul 4 - Mon, Jul 7
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$188 Roundtrip, found 1 day ago
$188
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $188 found 1 day ago
Mon, Nov 17 - Wed, Dec 3
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$190 Roundtrip, found 2 days ago
$190
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 17 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Wed, Dec 3, priced at $190 found 2 days ago
Thu, Sep 11 - Tue, Sep 16
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$195 Roundtrip, found 4 hours ago
$195
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Sep 11 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $195 found 4 hours ago
Thu, Sep 11 - Tue, Sep 16
BUF
Buffalo Niagara Intl.
IAD
Washington Dulles Intl.
$197 Roundtrip, found 4 hours ago
$197
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Sep 11 from Buffalo Niagara Intl. to Washington Dulles Intl., returning Tue, Sep 16, priced at $197 found 4 hours 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.