United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $259

The cheapest prices found with in the last 7 days for return flights were $259 and $259 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Oct 29 - Mon, Nov 2
BIL
Logan Intl.
DEN
Denver Intl.
$259 Roundtrip, found 19 hours ago
$259
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Oct 29 from Logan Intl. to Denver Intl., returning Mon, Nov 2, priced at $259 found 19 hours ago
Fri, Sep 18 - Sun, Sep 20
BIL
Logan Intl.
DEN
Denver Intl.
$263 Roundtrip, found 1 hour ago
$263
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Sep 18 from Logan Intl. to Denver Intl., returning Sun, Sep 20, priced at $263 found 1 hour ago
Fri, Sep 18 - Sun, Sep 20
BIL
Logan Intl.
DEN
Denver Intl.
$273 Roundtrip, found 1 hour ago
$273
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Sep 18 from Logan Intl. to Denver Intl., returning Sun, Sep 20, priced at $273 found 1 hour ago
Thu, Sep 17 - Sat, Sep 19
BIL
Logan Intl.
DEN
Denver Intl.
$277 Roundtrip, found 5 days ago
$277
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 17 from Logan Intl. to Denver Intl., returning Sat, Sep 19, priced at $277 found 5 days ago
Fri, Oct 16 - Sun, Oct 18
BIL
Logan Intl.
DEN
Denver Intl.
$283 Roundtrip, found 2 hours ago
$283
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Oct 16 from Logan Intl. to Denver Intl., returning Sun, Oct 18, priced at $283 found 2 hours ago
Fri, Sep 4 - Sat, Sep 5
BIL
Logan Intl.
DEN
Denver Intl.
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 4 from Logan Intl. to Denver Intl., returning Sat, Sep 5, priced at $289 found 2 days ago
Wed, Sep 23 - Sun, Sep 27
BIL
Logan Intl.
DEN
Denver Intl.
$291 Roundtrip, found 4 days ago
$291
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 23 from Logan Intl. to Denver Intl., returning Sun, Sep 27, priced at $291 found 4 days ago
Fri, Sep 18 - Sun, Sep 20
BIL
Logan Intl.
DEN
Denver Intl.
$292 Roundtrip, found 1 hour ago
$292
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Sep 18 from Logan Intl. to Denver Intl., returning Sun, Sep 20, priced at $292 found 1 hour ago
Wed, Sep 23 - Sun, Sep 27
BIL
Logan Intl.
DEN
Denver Intl.
$296 Roundtrip, found 4 days ago
$296
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 23 from Logan Intl. to Denver Intl., returning Sun, Sep 27, priced at $296 found 4 days ago
Fri, Sep 18 - Sun, Sep 20
BIL
Logan Intl.
DEN
Denver Intl.
$301 Roundtrip, found 1 hour ago
$301
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Sep 18 from Logan Intl. to Denver Intl., returning Sun, Sep 20, priced at $301 found 1 hour ago
Thu, Oct 15 - Sun, Oct 18
BIL
Logan Intl.
DEN
Denver Intl.
$303 Roundtrip, found 16 hours ago
$303
Roundtrip
found 16 hours ago
Select United flight, departing Thu, Oct 15 from Logan Intl. to Denver Intl., returning Sun, Oct 18, priced at $303 found 16 hours ago
Fri, Oct 16 - Sun, Oct 18
BIL
Logan Intl.
DEN
Denver Intl.
$311 Roundtrip, found 2 hours ago
$311
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Oct 16 from Logan Intl. to Denver Intl., returning Sun, Oct 18, priced at $311 found 2 hours ago
Fri, Sep 4 - Sat, Sep 5
BIL
Logan Intl.
DEN
Denver Intl.
$313 Roundtrip, found 2 days ago
$313
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 4 from Logan Intl. to Denver Intl., returning Sat, Sep 5, priced at $313 found 2 days ago
Thu, Oct 15 - Sun, Oct 18
BIL
Logan Intl.
DEN
Denver Intl.
$316 Roundtrip, found 16 hours ago
$316
Roundtrip
found 16 hours ago
Select United flight, departing Thu, Oct 15 from Logan Intl. to Denver Intl., returning Sun, Oct 18, priced at $316 found 16 hours ago
Thu, Oct 29 - Mon, Nov 2
BIL
Logan Intl.
DEN
Denver Intl.
$321 Roundtrip, found 19 hours ago
$321
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Oct 29 from Logan Intl. to Denver Intl., returning Mon, Nov 2, priced at $321 found 19 hours ago
Wed, Sep 23 - Mon, Sep 28
BIL
Logan Intl.
DEN
Denver Intl.
$324 Roundtrip, found 4 days ago
$324
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 23 from Logan Intl. to Denver Intl., returning Mon, Sep 28, priced at $324 found 4 days ago
Fri, Sep 18 - Sun, Sep 20
BIL
Logan Intl.
DEN
Denver Intl.
$326 Roundtrip, found 1 hour ago
$326
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Sep 18 from Logan Intl. to Denver Intl., returning Sun, Sep 20, priced at $326 found 1 hour ago
Thu, Oct 29 - Mon, Nov 2
BIL
Logan Intl.
DEN
Denver Intl.
$329 Roundtrip, found 19 hours ago
$329
Roundtrip
found 19 hours ago
Select United flight, departing Thu, Oct 29 from Logan Intl. to Denver Intl., returning Mon, Nov 2, priced at $329 found 19 hours ago

Frequently asked questions

What route does flight number UA478 take?
Flight number UA478 flies directly from Denver, CO Airport (DEN-Denver Intl.) to ORD. During this journey, you can expect to be in the air for around 2 hours and 25 minutes. It's wise to book ahead to secure your favorite seat.
How often is UA478 on time?
If you're traveling on United Airlines flight number UA478 between Denver Intl. Airport (DEN) and O'Hare Intl. Airport (ORD), 86% of these trips run on schedule. In the rare event of a delay, the wait time is about 42 minutes on average. Thanks to the air carrier's quality service, this service has a star rating of 2.4.
What kind of plane is on flight number UA478?
Expect to step aboard a Boeing 737 MAX 9 if your flight number is UA478. Most services from DIA airport to O'Hare Airport use this aircraft type.
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 UA478 flight with Travelocity, please visit our Customer Service Portal.