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Cheap flights from Chiang Mai to Portugal from ฿18,691

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LIS
6 May — 13 May1
1 adult

Cheap flight deals from Chiang Mai to Portugal

Keep the following information in mind while searching for Chiang Mai to Portugal flight deals. Data was last updated 1 May 2025.

Round-trip from

฿30,974

One-way from

฿18,691
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
  • สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
  • 14/5-21/5
  • 4 total stops
  • 59h 10m total
  • Chiang Mai to Portugal
Search Deals
23/8
  • 23/8
  • 3 total stops
  • 49h 55m total
  • Chiang Mai to Portugal
Search Deals

Find flight deals from Chiang Mai to Portugal

Cheapest flights from Chiang Mai to Portugal
Explore the most affordable flight options available from Chiang Mai to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 May 2025.

Wed 14/520:00CNX - LIS
2 stops33h 20mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 21/505:55LIS - CNX
2 stops25h 50mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 29/4฿30,974
Wed 14/506:30CNX - LIS
3 stops46h 45mMultiple Airlines
Wed 21/508:30LIS - CNX
3 stops32h 20mMultiple Airlines
Deal found 29/4฿31,842

Cheapflights Fare Finder

Customise your flight search to find flights from Chiang Mai 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 17,341 searches. Data last updated 1 May 2025.
Use the filters below to find and compare flights from Chiang Mai to Portugal that are best for you.

Fly from

Chiang Mai

Fly to

Portugal

Route

Depart

Return

Price

Chiang MaiLisbon

CNX - LIS

CNXLIS

Chiang Mai

Wed 14/5

20:00-23:20

2 stops33h 20m

Lisbon Humberto Delgado

Wed 21/5

05:55-13:45

2 stops25h 50m

฿30,974

Chiang MaiLisbon

CNX - LIS

CNXLIS

Chiang Mai

Wed 14/5

06:30-23:15

3 stops46h 45m

Lisbon Humberto Delgado

Wed 21/5

08:30-22:50

3 stops32h 20m

฿31,842

Chiang MaiLisbon

CNX - LIS

CNXLIS

Chiang Mai

Sat 23/8

12:20-08:15

3 stops49h 55m

฿18,691

Chiang MaiLisbon

CNX - LIS

CNXLIS

Chiang Mai

Fri 22/8

21:45-06:10

1 stop38h 25m

฿31,542

Flights are sorted by cheapest return flights first.

Deals found on 30/4

Best time to book a flight from Chiang Mai to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Chiang Mai with our price prediction graph.
Estimated return 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 Chiang Mai to Portugal

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Portugal when rainfall is around 6.0 mm.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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 1 May 2025.
Korean Air
8.4
Very Good
1,069 reviews
Check prices

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very Good
1,069 reviews
Korean Air
8.4
Very Good
1,069 reviews
Check prices

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
7.5
Good
1,588 reviews
Korean Air
8.4
Very Good
1,069 reviews
Check prices

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Related info for your journey

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

  • What airport do you fly from for flights from Chiang Mai to Portugal?

    Chiang Mai (CNX), located 3.1 km from the city centre, is the airport you fly out of when you book flights from Chiang Mai to Portugal.

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

    Yes. In addition to deals on Chiang Mai to Portugal flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Mai to Portugal?

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

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

    Yes. Cheapflights offers flight deals from Chiang Mai 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Portugal car hire
Lisbon car hire

Fly with Cheapflights

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How does Cheapflights help users find flights from Chiang Mai to Portugal?

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Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Portugal?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Portugal.

Can Cheapflights find flights from Chiang Mai to Portugal with no change fees?

Need flexible booking options for your flight to Portugal from Chiang Mai? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Chiang Mai to Portugal become cheaper?

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