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Portugal

$256+ Cheap flights from Aurora, CO to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LIS
Mar 12 — Mar 191
Thu 3/12
Thu 3/19
1 adult, Economy
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Cheap flight deals from Aurora to Portugal

Cheapest flights from Aurora to Portugal
Explore the most affordable flight options available from Aurora to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 10, 2026.

This Mytrip deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:20 pm
DEN
-
OPO
1 stop13h 30m
Lufthansa
Thu 11/196:00 am
OPO
-
DEN
1 stop17h 00m
Lufthansa
Deal found 2/9$484
This Gotogate deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:25 pm
DEN
-
OPO
2 stops22h 05m
Multiple Airlines
Thu 11/196:00 am
OPO
-
DEN
1 stop17h 00m
Multiple Airlines
Deal found 2/9$486
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:45 pm
DEN
-
OPO
1 stop12h 45m
United Airlines
Thu 11/196:00 am
OPO
-
DEN
1 stop17h 00m
United Airlines
Deal found 2/9$488
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:40 am
DEN
-
OPO
2 stops16h 50m
United Airlines
Fri 11/206:00 am
OPO
-
DEN
1 stop17h 00m
United Airlines
Deal found 2/9$493
This Travelocity deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:20 pm
DEN
-
OPO
1 stop13h 30m
Multiple Airlines
Tue 11/177:20 pm
OPO
-
DEN
2 stops31h 35m
Multiple Airlines
Deal found 2/9$497
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:17 am
DEN
-
OPO
2 stops18h 13m
United Airlines
Thu 11/196:00 am
OPO
-
DEN
1 stop17h 00m
United Airlines
Deal found 2/9$498
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:17 am
DEN
-
OPO
2 stops18h 13m
United Airlines
Fri 11/206:00 am
OPO
-
DEN
2 stops24h 03m
United Airlines
Deal found 2/9$503
This KAYAK deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:45 pm
DEN
-
OPO
1 stop21h 40m
Lufthansa
Thu 11/196:00 am
OPO
-
DEN
1 stop17h 00m
Lufthansa
Deal found 2/9$504
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:30 pm
DEN
-
OPO
1 stop14h 00m
United Airlines
Tue 11/1712:35 pm
OPO
-
DEN
1 stop15h 50m
United Airlines
Deal found 2/9$507
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:32 am
DEN
-
OPO
2 stops18h 58m
United Airlines
Tue 11/1712:35 pm
OPO
-
DEN
2 stops18h 20m
United Airlines
Deal found 2/9$512
This KAYAK deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/241:30 pm
DEN
-
FAO
2 stops17h 20m
SWISS
Tue 3/37:00 pm
FAO
-
DEN
2 stops31h 48m
SWISS
Deal found 2/9$553
This KLM deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:10 pm
DEN
-
FAO
2 stops21h 55m
KLM
Tue 3/107:45 pm
FAO
-
DEN
2 stops31h 43m
KLM
Deal found 2/9$554

Find flight deals from Aurora to Portugal

Keep the following information in mind while searching for Aurora to Portugal flight deals. Data was last updated February 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$550
(FlightHub)

One-way from

$256
(KLM)

Popular in

June

Cheapest in

January

Average price

$663
Provider with most accurate pricing for Denver Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Lisbon Humberto Delgado flights.
Search Deals
From Aurora to Portugal
Search Deals
One-way flight from Aurora to Portugal
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Aurora to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 10, 2026.
Use the filters below to find and compare flights from Aurora to Portugal that are best for you.

Fly from

Aurora

Fly to

Portugal

Route

Depart

Return

Price

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Tue 2/24

1:10 pm-6:05 pm

2 stops21h 55m

Faro

Thu 3/5

8:15 pm-7:21 pm

2 stops30h 06m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 2/25

6:00 am-9:35 am

2 stops20h 35m

Faro

Thu 3/5

8:15 pm-6:08 pm

2 stops28h 53m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Tue 2/24

11:33 am-6:05 pm

2 stops23h 32m

Faro

Fri 3/6

9:15 am-12:23 am

2 stops22h 08m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Mon 2/23

12:50 pm-6:55 pm

2 stops23h 05m

Faro

Fri 3/6

9:15 am-12:23 am

2 stops22h 08m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 2/25

12:50 pm-8:25 am

2 stops36h 35m

Faro

Fri 3/6

9:15 am-12:23 am

2 stops22h 08m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Mon 3/9

12:51 pm-6:55 pm

2 stops24h 04m

Faro

Mon 3/16

7:15 pm-8:20 pm

2 stops31h 05m

$554

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Tue 3/3

10:20 am-9:30 am

2 stops16h 10m

Faro

Tue 3/10

7:45 pm-7:36 pm

2 stops29h 51m

$554

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/10

9:36 am-2:45 pm

2 stops23h 09m

Porto

Wed 3/18

6:00 am-5:00 pm

1 stop17h 00m

$569

DenverPorto

DEN - OPO

DENOPO

Denver Intl

Tue 3/10

6:40 am-10:30 am

2 stops21h 50m

Porto

Wed 3/18

5:00 am-10:17 pm

2 stops23h 17m

$571

DenverFaro

DEN - FAO

DENFAO

Denver Intl

Wed 2/25

6:00 am-9:35 am

2 stops20h 35m

Faro

Sat 3/7

9:15 am-6:51 pm

2 stops40h 36m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 59 results
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Best time to book a flight from Aurora to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Aurora with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Aurora to Portugal

What is the cheapest month to book a flight from Aurora to Portugal?

Currently, November is the cheapest month in which you can book a flight from Aurora to Portugal (average of $501). Flying from Aurora to Portugal in June is currently the most expensive (average of $1,058). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated February 10, 2026.
Peruse reviews from past customers who have flown with United Airlines, Turkish Airlines, and Air Canada from Aurora to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,266 reviews
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Turkish Airlines
7.3
Good
4,213 reviews
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,701 reviews
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,777 reviews
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,724 reviews
United Airlines
7.4
Good
9,266 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Aurora to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Aurora to Portugal?

    There are many flights that can get you from Aurora to Portugal in 21h 50m. Fly via KLM, United Airlines, or Delta to get the fastest option. The distance between Aurora and Portugal is about 4747 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Aurora to Portugal one-way?

    One-way options have recently been found by users for as low as $242 on Icelandair. Other airlines that offer cheap prices include British Airways from $325 and Air France from $333 one-way.

  • What are the most popular routes from Aurora to Portugal?

    The most popular route from Aurora to Portugal is Denver Intl - Lisbon Humberto Delgado. You may also consider Denver Intl - Porto or Denver Intl - Faro.

  • Can I find deals for flights from Aurora to Portugal that include hotel bookings?

    Yes. In addition to deals on Aurora to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Aurora to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Aurora to Portugal.

  • Can I find deals for business class flights from Aurora to Portugal?

    Yes. Cheapflights offers flight deals from Aurora to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Aurora to Portugal?

    Currently, November is the cheapest month in which you can book a flight from Aurora to Portugal (average of $501). Flying from Aurora to Portugal in June is currently the most expensive (average of $1,058). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Aurora to Portugal

Discover the top 10 airlines that operate flights from Aurora to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$668FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$880FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$559Average$1,070FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$574Average$692FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$574Average$1,230FlexibilityNo cancel feeOn-time69%
DeltaCheapest$575Average$961FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$595Average$868FlexibilityNo cancel feeOn-time67%
KLMCheapest$599Average$686FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$603Average$984FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$630Average$915FlexibilityNo cancel feeOn-time71%

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