United Flight 5257 Deals & Information (2025/2026)

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United Flight 5257 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $189 and $214 for one-way flights to Logan Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 11 - Sun, Sep 14
DEN
Denver Intl.
BIL
Logan Intl.
$189 Roundtrip, found 20 hours ago
$189
Roundtrip
found 20 hours ago
Select United flight, departing Thu, Sep 11 from Denver Intl. to Logan Intl., returning Sun, Sep 14, priced at $189 found 20 hours ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$193 Roundtrip, found 21 hours ago
$193
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $193 found 21 hours ago
Mon, Jul 14 - Tue, Jul 22
DEN
Denver Intl.
BIL
Logan Intl.
$193 Roundtrip, found 5 days ago
$193
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jul 14 from Denver Intl. to Logan Intl., returning Tue, Jul 22, priced at $193 found 5 days ago
Fri, Sep 19 - Mon, Sep 22
DEN
Denver Intl.
BIL
Logan Intl.
$194 Roundtrip, found 1 day ago
$194
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 19 from Denver Intl. to Logan Intl., returning Mon, Sep 22, priced at $194 found 1 day ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$198 Roundtrip, found 21 hours ago
$198
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $198 found 21 hours ago
Thu, Aug 14 - Mon, Aug 18
DEN
Denver Intl.
BIL
Logan Intl.
$203 Roundtrip, found 3 days ago
$203
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 14 from Denver Intl. to Logan Intl., returning Mon, Aug 18, priced at $203 found 3 days ago
Fri, Nov 21 - Mon, Nov 24
DEN
Denver Intl.
BIL
Logan Intl.
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 21 from Denver Intl. to Logan Intl., returning Mon, Nov 24, priced at $219 found 1 day ago
Thu, Aug 14 - Mon, Aug 18
DEN
Denver Intl.
BIL
Logan Intl.
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 14 from Denver Intl. to Logan Intl., returning Mon, Aug 18, priced at $223 found 3 days ago
Fri, Sep 19 - Mon, Sep 22
DEN
Denver Intl.
BIL
Logan Intl.
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 19 from Denver Intl. to Logan Intl., returning Mon, Sep 22, priced at $224 found 1 day ago
Thu, Aug 14 - Mon, Aug 18
DEN
Denver Intl.
BIL
Logan Intl.
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 14 from Denver Intl. to Logan Intl., returning Mon, Aug 18, priced at $228 found 3 days ago
Thu, Sep 11 - Sun, Sep 14
DEN
Denver Intl.
BIL
Logan Intl.
$249 Roundtrip, found 20 hours ago
$249
Roundtrip
found 20 hours ago
Select United flight, departing Thu, Sep 11 from Denver Intl. to Logan Intl., returning Sun, Sep 14, priced at $249 found 20 hours ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$254 Roundtrip, found 21 hours ago
$254
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $254 found 21 hours ago
Mon, Jul 14 - Tue, Jul 22
DEN
Denver Intl.
BIL
Logan Intl.
$254 Roundtrip, found 5 days ago
$254
Roundtrip
found 5 days ago
Select United flight, departing Mon, Jul 14 from Denver Intl. to Logan Intl., returning Tue, Jul 22, priced at $254 found 5 days ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$259 Roundtrip, found 21 hours ago
$259
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $259 found 21 hours ago
Thu, Aug 14 - Mon, Aug 18
DEN
Denver Intl.
BIL
Logan Intl.
$263 Roundtrip, found 3 days ago
$263
Roundtrip
found 3 days ago
Select United flight, departing Thu, Aug 14 from Denver Intl. to Logan Intl., returning Mon, Aug 18, priced at $263 found 3 days ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$264 Roundtrip, found 21 hours ago
$264
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $264 found 21 hours ago
Fri, Nov 21 - Mon, Nov 24
DEN
Denver Intl.
BIL
Logan Intl.
$266 Roundtrip, found 1 day ago
$266
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 21 from Denver Intl. to Logan Intl., returning Mon, Nov 24, priced at $266 found 1 day ago
Thu, Jul 17 - Sun, Jul 20
DEN
Denver Intl.
BIL
Logan Intl.
$269 Roundtrip, found 21 hours ago
$269
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Jul 17 from Denver Intl. to Logan Intl., returning Sun, Jul 20, priced at $269 found 21 hours ago

Frequently asked questions

What route does flight number UA5257 take?
UA5257 is used on multiple routes, but the most common is between Denver, CO Airport (DEN-Denver Intl.) and Pitkin County Airport (ASE). If you manage to score a direct flight, you'll disembark the plane in about 48 minutes. Multi-stop flights can also travel under the same number, as can flights on other routes.
What kind of plane is on flight number UA5257?
If you have a seat on flight UA5257 from DIA airport to Aspen, CO Airport (ASE-Pitkin County), you'll most likely be heading off on the Bombardier CRJ700. Flight UA5257 serves multiple 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 UA5257 flight with Travelocity, please visit our Customer Service Portal.