Jetboil Flash 1.0 L Fast Boil System Review
An in-depth review of a convenient, easy-to-use stove for camping and backpacking
September 17th, 2025
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Our verdict
We've spent the past year testing the Jetboil Flash 1.0L Fast Boil System stove on everything from a month straight of camping to a thru-hike of Canada's West Coast Trail. I don't always want an integrated backpacking stove, but when I do, I reach for the Jetboil Flash..
It's as easy to use as a stove at home with the most intuitive on-off switch we've seen on a backpacking stove, which is why we named it Easiest Backpacking Stove in our Best Backpacking Stoves guide. The temperature indicator tells you when it's warm, hot, or boiled. The insulated sleeve keeps your hands safe and your beverage warm while having style.
We also compared the Jetboil Flash 1.0 L side-by-side with the older version of the Jetboil Flash, finding it much easier to ignite, more stable, and easier to get the pot on and off the base. I've waited nearly a decade for these updates and now I want them to be in every stove Jetboil makes.
Like all integrated stoves, the Jetboil Flash 1.0L is heavier, bulkier, and more expensive than traditional canister backpacking stoves. But integrated stoves tend to lead to a faster boil due to a more efficient heat transfer system and have the advantage of having all the parts you need in an all-in-one package.
The Jetboil Flash 1.0L is best for campers and backpackers who want a fast and easy boil of water only. If you plan to eat freeze-dried or dehydrated backpacking meals and only need hot water, this is the most no-fuss stove you can get. If you are camping and using a two-burner stove for your meals, the Jetboil Flash 1.0L is the addition you want for quickly making coffee or hot cocoa at the same time. If you're backpacking or thru-hiking a cold, wet trail and want hot water faster, the Jetboil Flash 1.0L is so easy and fast, you won't think twice about stopping for a hot lunch or a morale-boosting cup of tea.
I've found myself in all of those scenarios this past year and the Flash 1.0 L has become my stove of choice for all but the most ultralight adventures.
Jetboil Flash 1.0 L Fast Boil System
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Jetboil Flash 1.0 L Specifications
Weight: 13.1 ounces
Fuel Type: Isobutane-propane canister
Boil Time: 120 seconds (0.5L), 4 minutes (1L)
Capacity: 1 liter / 32 fl oz
Dimensions: 4.3 x 7.3 inches
Best for: Backpacking, fast camp cooking
Ignition: Auto-ignition (turn-and-click)
Technology: FluxRing heat exchanger
Fuel included: No (100g canister fits inside)
Price: $130
Comparison table
| BACKPACKING STOVE | WEIGHT (OZ) | INTEGRATED POT? | FUEL TYPE | BOIL TIME (1L) | SIMMER? | AUTO IGNITION? | PRESSURE REGULATOR? | FUEL EFFICIENCY BOILS PER 100G FUEL |
|---|---|---|---|---|---|---|---|---|
| Jetboil Flash 1.0 L | 13.1 | Yes | Canister | 4 min | No | Yes | No | 10 L |
| Jetboil MiniMo | 14.0 | Yes | Canister | 4 min 30 sec | Yes | Yes | Yes | 12 L |
| MSR PocketRocket Deluxe | 2.9 | No | Canister | 3 minutes, 18 sec | Yes | Yes | Yes | 7.5 L |
| MSR WindBurner Duo | 21.1 | Yes | Canister | 4 min 30 sec | Marginal | No | Yes | 7.9 L |
| MSR Switch Stove | 13.8 | Yes | Canister | 5 min | Yes | Yes | Yes | 6.5 L |
Who is it for?
Backpackers and thru-hikers who prioritize speed and efficiency over cooking versatility or being ultralight
Backpackers and campers who mostly eat dehydrated or freeze-dried meals
Campers who need quick water boiling for coffee or tea while simultaneously cooking more elaborate meals on a two-burner camp stove
Backpackers and campers looking for an all-in-one system that packs compactly
Beginners who want foolproof operation with auto-ignition and heat indicators
What we liked
Auto-ignition that resembles the stove at home and is foolproof
Temperature indicator
System that locks the pot to the base is secure yet easy to unlock and lock
Neoprene insulated sleeve Fast boiling
What could be better
Cannot be used to simmer or do much more than boil water
No temperature regulator so can't control the flame much
Doesn't doesn't work as well in cold weather, at high altitude, or when your fuel tank is running low
Weight
How we tested
I've spent the past year testing the Jetboil Flash 1.0L Fast Boil system on everything from a month-long camping trip in the Sierra to a thru-hike of Canada's West Coast Trail. I've taken it camping near 10,000 feet for cold, October nights near Mammoth Lakes, California. I've taken it camping in the desert in Joshua Tree National Park. I've also taken it on quick, sub-24 hour overnighters in the San Gabriel mountains in Southern California.
Each time I use it, I've been checking for ease of ignition, speed of boil, and the temperature indicator. We also tested it by boiling side-by-side with the previous version of the Jetboil Flash to compare these metrics.
I've also shared the stove with camping and backpacking beginners to test whether they are able to figure out how to use the "foolproof" operation system. In each case, not only have they been able to figure it out, but have felt more confident (dare I say, even more interested?) in camping and backpacking.
Performance in the field
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The Jetboil Flash 1.0L stove has a reported 120 second (2-minute) boil time for 2 cups, which is the most typical amount of hot water that most freeze-dried meals need. We found that this varied based on wind, temperature, altitude, and whether we were using a brand-new fuel can or a fuel can on its last dregs. But on average, we found that time to be accurate.
The fast boil means that on the West Coast Trail, we never hesitated to take a 2-minute coffee break mid-day. Those coffees on the beach are one of my favorite memories from that trip.
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As someone who chronically runs out of fuel on camping and backpacking trips, the excellent heat transfer means less fuel consumption per boil. On the remote West Coast Trail where we had to bring all the fuel for two people for a week, the fuel efficiency was a huge favor. It was so wet and chilly that we often had two hot cups of coffee in the morning, a hot lunch, a hot dinner, and a hot beverage at night. We carried an 8-oz fuel can and even then, had a lot leftover at the end of the trip.
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The real star of the Jetboil Flash 1.0 L is the auto-ignition and color-changing heat indicator that make operating this stove foolproof. We shared this stove with several beginners, people new to integrated stove systems, and campers who weren't confident in their stove skills. They all said this stove was the one they could best figure out how to operate.
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Like most Flux Ring integrated stove systems, the wind resistance on this stove is well above average. For example, when compared against the MSR PocketRocket Deluxe, the Jetboil Flash 1.0L was much faster at getting a boil. It seemed comparable, if slightly less effective, than the Soto WindMaster at maintaining a flame during gusts.
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Like many of the integrated stoves we tested, the nest-inside design helps save significant pack space. We stored our Jetoil Flash 1.0L in two places on our packs: either in the large front mesh pocket or in a side water bottle pocket. In each case, the lid securely kept the fuel can and heating unit inside.
Like all integrated stoves, the Flash 1.0L isn't the most packable. It'd be a pain to carry on a desert trip where I would have needed the water bottle pocket space for carrying more water.
Many people carry their Jetboils inside their backpacks, but I prefer having easy access so I can take those impromptu mid-day coffee breaks or make myself a hot lunch, especially when backpacking in the shoulder season.
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I get that they can't sell us a pot where the water could overflow and burn people. But it feels like almost half the height of the pot is "dead space." The max-fill line is 500 mL on a pot that can hold 1.0L of cold water. The whole 1.0L name of this stove is just if you're using this as a water storing device. Unlike a 1L cookpot, you can't actually boil 1L of water in here.
That "dead space" at the top of the pot feels like extra weight I'd rather not be carrying.
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The Jetboil Flash 1.0L has a lot more bells and whistles than the old Jetboil Flash without increasing the weight of the system. However, for most minimalist backpackers (myself included), it is still too heavy for most ultralight missions.
Features
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Integrated 1-liter FluxRing cooking cup with insulating cozy: it's 1 L but the max fill line is 500 mL
Turn-and-click piezo igniter eliminates need for matches or lighter: While the previous model had an auto-igniter, this new system is more reliable. We broke the auto-ignite on the old system but this turn-and-click is as easy to use as the stove at home and seems to be more durable.
Thermochromatic heat indicator changes color with temperature: I wish every stove (even every stove from Jetboil!) had this feature. I tend to try to save fuel by bringing treated water just below boil and waiting a few extra minutes for my freeze-dried meals to rehydrate. The color-coded heat sensor lets me game the system and quickly tell whether I'm just below boil. I also prefer hot beverages around 160F (so I can start drinking my morning coffee immediately) and the heat indicator makes that temperature easy to find.
Bottom cover doubles as a measuring cup and bowl: As a cup, this could be handy if you want to drink tea as a pre-dinner drink while boiling water for your main dinner. As a measuring cup, this is useful if your freeze-dried backpacking food calls for 1.5 or 2 cups of boiling water. It is useful as a bowl if you are splitting two freeze-dried meals with two different people. Or you can do like I do and leave it at home to save myself from carrying the extra weight.
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FluxRing technology increases surface area for superior heat transfer: I've been pretty impressed over the years with the heat transfer efficiency of the FluxRing tech and the Jetboil Flash 1.0L is no exception.
Fast 120-second boil time for 0.5 liter of water: Among the fastest times of stoves we recorded.
Fuel-efficient design reduces canister consumption: This is one place where the Jetboil Flash 1.0L system shines. You can get 10L (or about 40 cups) of boiling water out of a 100g fuel canister.
Improved pot-to-burner connection with 3 locking points: So much more secure and easy to lock and unlock than the old Jetboil Flash!
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All components nest inside a cooking cup for compact storage: A 100g fuel can fit inside as well as the stove base unit and the lid secures on top to prevent losing any of the pieces.
Improved handle: the old handle was more or less just a piece of looped webbing. This new handle is padded and easier to hold.
Visual indicators confirm proper burner connection: this is huge as we've found some integrated stoves do not lock down on the burner connection easily.
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Compatible with Jetboil Silicone Coffee Press and Hanging Kit 2.0: We didn't test either of these accessories but have tested Jetboil coffee presses in the past. They allow you to turn your Jetboil into a French Press.
Jetboil Flash 1.0 L vs. similar stoves
The Jetboil Flash 1.0 L is easier to use than most backpacking stoves on the market. It has everything you need included as an integrated system. It's easier to get going with an easy auto-igniter, lots of insulation to prevent accidental burns, and a clear temperature indicator to prevent overboiling. This makes it well suited for people buying their first backpacking or camping stove. Still, it's so fast to boil and easy to use that advanced backpackers are going to like it, too.
Still, as an integrated stove, it is heavier than others on the market. It lacks a pressure regulator, meaning it won't work as well in colder temperatures or at altitude. You can't simmer food, as you can with the Jetboil MiniMo.
It does what it does very well: boil water fast. But there are lighter and less expensive systems out there for people willing to deal with a less convenient system.
Should I buy the Jetboil Flash?
Buy if you want the easiest to use, all-in-one, fast boil system with maximum fuel efficiency in a compact package.
Skip if you need versatile cooking options beyond boiling water or prefer ultralight minimalist setups.
For more tips and guidance, check out our How to Choose a Backpacking Stove guide.
Where to buy the Jetboil Flash?
The Jetboil Flash 1.0 L stove is a popular gear item, so you have options when it comes to retailers. Here are some of the pros of the retailers.
REI
Pros: 100% satisfaction policy for 1 year; 10% dividend for members.
Amazon
Pros: Free 2-day shipping with Amazon Prime membership
Similar products
MSR PocketRocket Deluxe
Weight: 2.6 oz
Integrated pot: No
Ignitor: No
Pressure regulator: No
Fuel type: Canister
Fuel source: Isobutane-propane
Average boil time (1L): 3 minutes, 30 seconds
Many backpackers buying their first backpacking stove may be choosing between the Jetboil Flash and the MSR PocketRocket Deluxe. They're two of the most popular backpacking stoves out there, and they're both beginner-friendly and easy to use.
The PocketRocket Deluxe is great until the wind shows up. That's when the Jetboil Flash 1.0L really shines for quick boil time and fuel efficiency.
The Deluxe is less expensive than the Jetboil Flash 1.0 L, but it doesn't come with an integrated pot so you're going to have to buy that separately. The Deluxe can accommodate different pot sizes, whereas the Jetboil Flash 1.0L can only take its own pot (unless you buy separately the attachment that can turn the Flash 1.0L into something that works for other pots).
MSR PocketRocket Deluxe
Weight: 15.5 oz
Integrated pot: Yes
Ignitor: Yes
Pressure regulator: Yes
Fuel type: Canister
Fuel source: Isobutane-propane
Average boil time (1L): 4 minutes 30 seconds
The MSR WindBurner Personal is MSR's mass-market take on their mountaineering/alpinist stove, the MSR Reactor. The MSR Reactor was built for climbers going way above treeline who were going to encounter large amounts of wind and still needed to boil water. The WindBurner reduces the weight (and cost) of that system to create an integrated backpacking stove system somewhat akin to the Jetboil line (except, in our tests, better in wind in cold).
The WindBurner and certainly the Reactor are still the best bets for mountaineering. But if you're camping, hiking, or backpacking, the Jetboil Flash 1.0L should be plenty of stove to get the job done.
MSR WindBurner Personal 1L
Weight: 14 ounces (includes cooking pot)
Push start integrated ignitor button: Yes
Pressure regulator: Yes
Integrated pot: Yes
Fuel type: Canister
Fuel source: Isobutane-propane
BTU: 6,000 BTU
Average boil time (1 L): 4 minutes 30 seconds
Like the Jetboil Flash 1.0L, but want something more packable? Part of what makes the Jetboil MiniMo the best integrated backpacking stove is its shape: a squat size 1 L pot vs. the more traditional “beer mug” shape of the Jetboil Flash or MSRs we tested.
The MiniMo's size is easier to pack, easier to clean, and easier to eat from than the Flash. The squat design is more stable and easier to simmer. It has a pressure regulator, but doesn't have a temperature indicator. It's also harder to get the pot unscrewed from the base than the Jetboil Flash 1.0L. You can read more about why we like the Jetboil MiniMo so much inour long-term, in-depth review of that stove.
Jetboil MiniMo
Why you should trust us / About the author
I’ve backpacked over 20,000 miles and have at least 1,000 nights sleeping outdoors. On most of these overnight trips, I’ve cooked dinner on backpacking stoves. When I wake up in the morning in the backcountry, I’ll boil up some hot coffee. On chilly days, I’ll make hot lunch. I've been writing about backpacking stoves since 2018, covering the newest models and taking them for extreme testing over many thousands of miles.
I’ve written about outdoor gear for numerous publications, including as contributing editor at Backpacker Magazine and the New York Times’ product review site, Wirecutter. I’m the author of the National Outdoor Book Award winning Long Trails Mastering the Art of the Thru-hike.
My book has extensive gear and nutrition chapters--both of which address different kinds of backpacking stoves. I regularly book speaking gigs with outdoor clubs, non-profits, and colleges and universities to talk about backpacking and lead gear panels. I’m also Editor-in-Chief here at Treeline Review and oversee all of our outdoor gear stories.
You can read more about me at www.eathomas.com or at her author page.
