United Flight 3778 Deals & Information (2025/2026)

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United Flight 3778 Route Deals From $74

The cheapest prices found with in the last 7 days for return flights were $149 and $74 for one-way flights to Logan Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 16 - Thu, Sep 25
CLE
Hopkins Intl.
BOS
Logan Intl.
$149 Roundtrip, found 9 hours ago
$149
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Sep 16 from Hopkins Intl. to Logan Intl., returning Thu, Sep 25, priced at $149 found 9 hours ago
Sat, Nov 15 - Mon, Nov 17
CLE
Hopkins Intl.
BOS
Logan Intl.
$158 Roundtrip, found 4 days ago
$158
Roundtrip
found 4 days ago
Select United flight, departing Sat, Nov 15 from Hopkins Intl. to Logan Intl., returning Mon, Nov 17, priced at $158 found 4 days ago
Tue, Sep 16 - Thu, Sep 25
CLE
Hopkins Intl.
BOS
Logan Intl.
$159 Roundtrip, found 9 hours ago
$159
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Sep 16 from Hopkins Intl. to Logan Intl., returning Thu, Sep 25, priced at $159 found 9 hours ago

Frequently asked questions

What route does flight number UA3778 take?
UA3778 is used on multiple routes, but the most common is between Greenville-Spartanburg Intl. Airport (GSP) and IAD. If you manage to score a direct flight, you'll disembark the plane in approximately 1 hour and 29 minutes. Multi-stop flights can also travel under this number, as can services on other routes.
What kind of plane is on flight number UA3778?
If you have a seat on flight UA3778 from Greenville, SC Airport (GSP-Greenville-Spartanburg Intl.) to Washington Dulles Intl. Airport (IAD), there's a strong chance you'll be setting off on the Bombardier CRJ. Flight UA3778 serves several routes, but this is the most popular one.
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 UA3778 flight with Travelocity, please visit our Customer Service Portal.