$350 Find Cheap Flights from Redmond to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Redmond to Portugal departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Redmond to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Redmond to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Redmond to Portugal

Fri, May 8 - Fri, May 15
United Airlines Logo
5:35 am - 9:55 pm
RDM
-
LIS
32h 20m
2 stops
United Airlines Logo
12:20 pm - 12:55 pm
LIS
-
RDM
32h 35m
2 stops
$633United Airlines
Sat, Apr 18 - Sat, Apr 25
Air France Logo
5:45 am - 10:25 pm
RDM
-
LIS
32h 40m
2 stops
Air France Logo
5:35 am - 5:01 pm
LIS
-
RDM
19h 26m
2 stops
$648Air France
Sat, Apr 18 - Sat, Apr 25
KLM Logo
11:35 am - 6:45 pm
RDM
-
LIS
23h 10m
2 stops
KLM Logo
8:55 am - 11:06 pm
LIS
-
RDM
22h 11m
2 stops
$661KLM
Thu, Apr 16 - Thu, Apr 23
KLM Logo
11:35 am - 6:45 pm
RDM
-
LIS
23h 10m
2 stops
KLM Logo
5:00 am - 5:01 pm
LIS
-
RDM
20h 01m
2 stops
$676KLM
Thu, May 7 - Thu, May 14
United Airlines Logo
1:20 pm - 10:45 pm
RDM
-
LIS
25h 25m
2 stops
United Airlines Logo
11:25 am - 10:59 pm
LIS
-
RDM
43h 34m
2 stops
$678United Airlines
Wed, Apr 15 - Wed, Apr 22
United Airlines Logo
5:00 am - 10:45 pm
RDM
-
LIS
33h 45m
2 stops
United Airlines Logo
11:25 am - 11:55 am
LIS
-
RDM
32h 30m
2 stops
$717United Airlines
Wed, Jul 22 - Tue, Aug 11
Air France Logo
12:30 pm - 5:50 pm
RDM
-
LIS
21h 20m
2 stops
Air France Logo
6:50 pm - 4:39 pm
LIS
-
RDM
29h 49m
2 stops
$764Air France
Sun, Apr 19 - Sun, Apr 26
United Airlines Logo
12:57 pm - 8:45 am
RDM
-
LIS
35h 48m
2 stops
United Airlines Logo
5:05 am - 11:55 am
LIS
-
RDM
38h 50m
2 stops
$767United Airlines
Wed, Jul 22 - Tue, Aug 11
Multiple Airlines Logo
12:30 pm - 6:45 pm
RDM
-
LIS
22h 15m
2 stops
Multiple Airlines Logo
6:50 pm - 4:39 pm
LIS
-
RDM
29h 49m
2 stops
$770Multiple Airlines
Wed, Jul 22 - Wed, Aug 12
Air France Logo
12:30 pm - 5:50 pm
RDM
-
LIS
21h 20m
2 stops
Air France Logo
6:50 pm - 4:39 pm
LIS
-
RDM
29h 49m
2 stops
$811Air France
Booking Insights

KAYAK's insights & trends for Redmond to Portugal flights

Get data-powered insights and trends into flights from Redmond to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Redmond to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Redmond to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Redmond to Portugal is February, when tickets cost $509 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,691 and $1,083 respectively.

Good to know

Low seasonJanuary
Cheapest flight$330
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Redmond to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Redmond to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Redmond to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Redmond to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Redmond to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Redmond to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Redmond to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Redmond to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Redmond to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Redmond to Portugal

 
Need help choosing which airline to fly with from Redmond to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9403 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

6.0 GoodAnonymous, Mar 2026
SFO - DEN
Read more United Airlines reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Everything you need to know for your flight from Redmond to Portugal

Information on your arrival and departure airports