United Flight UA4666 Deals & Information (2025/2026)

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United Flight 4666 Route Deals From $255

The cheapest prices found with in the last 7 days for return flights were $274 and $255 for one-way flights to Glacier Park Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jun 10 - Sat, Jun 14
DEN
Denver Intl.
FCA
Glacier Park Intl.
$274 Roundtrip, found 4 days ago
$274
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jun 10 from Denver Intl. to Glacier Park Intl., returning Sat, Jun 14, priced at $274 found 4 days ago
Sun, Jun 8 - Sun, Jun 15
DEN
Denver Intl.
FCA
Glacier Park Intl.
$284 Roundtrip, found 2 days ago
$284
Roundtrip
found 2 days ago
Select United flight, departing Sun, Jun 8 from Denver Intl. to Glacier Park Intl., returning Sun, Jun 15, priced at $284 found 2 days ago
Fri, Jun 6 - Mon, Jun 9
DEN
Denver Intl.
FCA
Glacier Park Intl.
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jun 6 from Denver Intl. to Glacier Park Intl., returning Mon, Jun 9, priced at $289 found 2 days ago
Fri, Jun 6 - Mon, Jun 9
DEN
Denver Intl.
FCA
Glacier Park Intl.
$329 Roundtrip, found 2 days ago
$329
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jun 6 from Denver Intl. to Glacier Park Intl., returning Mon, Jun 9, priced at $329 found 2 days ago
Sun, Jun 8 - Sun, Jun 15
DEN
Denver Intl.
FCA
Glacier Park Intl.
$335 Roundtrip, found 2 days ago
$335
Roundtrip
found 2 days ago
Select United flight, departing Sun, Jun 8 from Denver Intl. to Glacier Park Intl., returning Sun, Jun 15, priced at $335 found 2 days ago
Fri, Jun 27 - Sun, Jun 29
DEN
Denver Intl.
FCA
Glacier Park Intl.
$410 Roundtrip, found 3 hours ago
$410
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Jun 27 from Denver Intl. to Glacier Park Intl., returning Sun, Jun 29, priced at $410 found 3 hours ago

Frequently asked questions

What route does flight number UA4666 take?
UA4666 flies direct from DFW to DIA airport in 2 hours and 13 minutes. It can sometimes take other routes though, some of which could be multi-stop flights. Keep an eye out for this when locking in your seat to avoid any mix-ups.
What terminal does UA4666 fly out of?
UA4666 flights out of Dallas-Fort Worth Intl. Airport (DFW) generally depart from Terminal E. This flight number runs on a number of different routes, but the most popular one is Dallas-Fort Worth Intl. Airport (DFW) to Denver Intl. Airport (DEN).
What kind of plane is on flight number UA4666?
There’s every chance you’ll be aboard an Embraer 175 if you’ve booked a seat from Dallas-Fort Worth Intl. Airport (DFW) to Denver Intl. Airport (DEN), one route used for flight UA4666.
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 UA4666 flight with Travelocity, please visit our Customer Service Portal.