Photo by Melissa McDonald

Popular airlines from Portland to Littleton
- Alaska Airlines
Alaska Airlines
- Frontier Airlines
Frontier Airlines
- United
United
- Delta
Delta
- Southwest Airlines
Southwest Airlines
- American Airlines
American Airlines
- Sun Country Airlines
Sun Country Airlines
- Plan, book, fly with confidence
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Today's featured flight deals from Portland to Littleton
Nonstop
Carry-on included
Lower price than typical
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Sun, Sep 14 at 6:05am from Portland, arriving at 9:44am in Denver.Returning on Tue, Sep 23 at 8:50pm from Denver, arriving at 10:34pm in Portland.Select Frontier Airlines flight departing on Sun, Sep 14 at 6:05am from Portland, returning on Tue, Sep 23 at 8:50pm from Denver priced at $13075% less than typical$130
- Portland (PDX) to Denver (DEN).Southwest Airlines, nonstop.Departing on Wed, Sep 10 at 6:00pm from Portland, arriving at 9:30pm in Denver.Returning on Sun, Sep 14 at 10:29pm from Denver, arriving on Mon, Sep 15 at 12:12am in Portland.Select Southwest Airlines flight departing on Wed, Sep 10 at 6:00pm from Portland, returning on Sun, Sep 14 at 10:29pm from Denver priced at $13850% less than typical$138
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Sun, Aug 24 at 6:27am from Portland, arriving at 10:06am in Denver.Returning on Sat, Aug 30 at 8:50pm from Denver, arriving at 10:39pm in Portland.Select Frontier Airlines flight departing on Sun, Aug 24 at 6:27am from Portland, returning on Sat, Aug 30 at 8:50pm from Denver priced at $24325% less than typical$243
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Mon, Aug 25 at 6:27am from Portland, arriving at 10:06am in Denver.Returning on Fri, Aug 29 at 10:29pm from Denver, arriving on Sat, Aug 30 at 12:15am in Portland.Select Frontier Airlines flight departing on Mon, Aug 25 at 6:27am from Portland, returning on Fri, Aug 29 at 10:29pm from Denver priced at $23825% less than typical$238
- Portland (PDX) to Denver (DEN).Alaska Airlines, nonstop.Departing on Sat, Sep 20 at 7:00am from Portland, arriving at 10:44am in Denver.Returning on Fri, Sep 26 at 10:29pm from Denver, arriving on Sat, Sep 27 at 12:12am in Portland.Select Alaska Airlines flight departing on Sat, Sep 20 at 7:00am from Portland, returning on Fri, Sep 26 at 10:29pm from Denver priced at $14835% less than typical$148
- Portland (PDX) to Denver (DEN).Alaska Airlines, nonstop.Departing on Wed, Sep 10 at 7:00am from Portland, arriving at 10:44am in Denver.Returning on Sun, Sep 14 at 10:29pm from Denver, arriving on Mon, Sep 15 at 12:12am in Portland.Select Alaska Airlines flight departing on Wed, Sep 10 at 7:00am from Portland, returning on Sun, Sep 14 at 10:29pm from Denver priced at $20825% less than typical$208
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Thu, Sep 11 at 6:05am from Portland, arriving at 9:44am in Denver.Returning on Sun, Sep 14 at 10:29pm from Denver, arriving on Mon, Sep 15 at 12:12am in Portland.Select Frontier Airlines flight departing on Thu, Sep 11 at 6:05am from Portland, returning on Sun, Sep 14 at 10:29pm from Denver priced at $10730% less than typical$107
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Wed, Sep 17 at 7:15am from Portland, arriving at 10:58am in Denver.Returning on Sun, Sep 21 at 10:29pm from Denver, arriving on Mon, Sep 22 at 12:12am in Portland.Select Frontier Airlines flight departing on Wed, Sep 17 at 7:15am from Portland, returning on Sun, Sep 21 at 10:29pm from Denver priced at $9930% less than typical$99
- Portland (PDX) to Denver (DEN).Frontier Airlines, nonstop.Departing on Wed, Sep 10 at 7:15am from Portland, arriving at 10:58am in Denver.Returning on Sun, Sep 14 at 10:29pm from Denver, arriving on Mon, Sep 15 at 12:12am in Portland.Select Frontier Airlines flight departing on Wed, Sep 10 at 7:15am from Portland, returning on Sun, Sep 14 at 10:29pm from Denver priced at $10925% less than typical$109
Cheap Flights from Portland to Littleton (PDX-DEN)
Prices were available within the past 7 days and start at $49 for one-way flights and $75 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 25 - Sat, Nov 1
PDX
Portland
DEN
Denver
$75 Roundtrip, found 2 hours ago
$75
Roundtrip
found 2 hours ago

Wed, Sep 17 - Tue, Sep 23
PDX
Portland
DEN
Denver
$88 Roundtrip, found 1 hour ago
$88
Roundtrip
found 1 hour ago

Sat, Nov 1 - Wed, Nov 12
PDX
Portland
DEN
Denver
$157 Roundtrip, found 1 day ago
$157
Roundtrip
found 1 day ago

Sat, Sep 20 - Wed, Sep 24
PDX
Portland
DEN
Denver
$157 Roundtrip, found 1 hour ago
$157
Roundtrip
found 1 hour ago

Wed, Sep 17 - Tue, Sep 23
PDX
Portland
DEN
Denver
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago

Sat, Sep 20 - Wed, Sep 24
PDX
Portland
DEN
Denver
$177 Roundtrip, found 1 hour ago
$177
Roundtrip
found 1 hour ago
Find the cheapest month to fly from Portland (PDX) to Denver (DEN)
February is typically the cheapest month to fly
From $48 - $277 per traveler.
Graph displaying average flight prices per month
Alternative airports near Littleton
Prices were available within the past 7 days. Prices and availability are subject to change.
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