$422 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 4/30. 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

Mon, Apr 20 - Mon, Apr 27
Multiple Airlines Logo
11:35 am - 5:50 pm
RDM
-
LIS
22h 15m
2 stops
Multiple Airlines Logo
7:45 pm - 5:01 pm
LIS
-
RDM
29h 16m
2 stops
$670Multiple Airlines
Fri, Apr 17 - Wed, Apr 29
Delta Logo
6:05 am - 2:35 pm
RDM
-
LIS
24h 30m
2 stops
Delta Logo
5:00 am - 11:06 pm
LIS
-
RDM
26h 06m
2 stops
$674Delta
Sat, May 2 - Sat, May 9
Delta Logo
6:05 am - 2:55 pm
RDM
-
LIS
24h 50m
2 stops
Delta Logo
5:00 am - 6:35 pm
LIS
-
RDM
21h 35m
2 stops
$720Delta
Wed, Apr 29 - Wed, May 20
Delta Logo
11:35 am - 5:50 pm
RDM
-
LIS
22h 15m
2 stops
Delta Logo
5:00 am - 10:54 pm
LIS
-
RDM
25h 54m
2 stops
$750Delta
Fri, Apr 17 - Wed, Apr 29
United Airlines Logo
1:55 pm - 10:35 am
RDM
-
LIS
36h 40m
3 stops
United Airlines Logo
5:05 am - 10:59 pm
LIS
-
RDM
25h 54m
2 stops
$752United Airlines
Wed, May 6 - Wed, May 13
KLM Logo
6:05 am - 2:35 pm
RDM
-
LIS
24h 30m
2 stops
KLM Logo
5:00 am - 10:54 pm
LIS
-
RDM
25h 54m
2 stops
$754KLM
Fri, Apr 17 - Wed, Apr 29
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
$789KLM
Fri, Apr 17 - Wed, Apr 29
United Airlines Logo
1:55 pm - 10:30 am
RDM
-
LIS
60h 35m
3 stops
United Airlines Logo
6:15 am - 6:05 pm
LIS
-
RDM
19h 50m
2 stops
$810United Airlines
Mon, Aug 17 - Wed, Sep 2
KLM Logo
6:20 am - 2:35 pm
RDM
-
LIS
24h 15m
2 stops
KLM Logo
5:00 am - 10:47 pm
LIS
-
RDM
25h 47m
2 stops
$815KLM
Thu, May 7 - Thu, May 14
United Airlines Logo
5:35 am - 10:45 pm
RDM
-
LIS
33h 10m
2 stops
United Airlines Logo
11:25 am - 5:58 pm
LIS
-
RDM
38h 33m
2 stops
$826United Airlines
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 $1,098 respectively.

Good to know

Low seasonJanuary
Cheapest flight$434
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 9469 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

2.0 MediocreJenny, Mar 2026
BWI - SFO
Read more United Airlines reviews

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

No seat back entertainment. And app had a hard time getting entertainment loaded.

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

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

Information on your arrival and departure airports