Best 21-day eSIM Plans for Mongolia
Going to Mongolia for 21 days (3 weeks)? These plans cover your full trip — all with instant QR delivery, no contract, and no SIM card to pick up at the airport.
Starting from (Free)
$2.34
Pro membership — save 7%
$2.18
Premium membership — save 12%
$2.06
Recommended 21-day plans — Mongolia
Best Value
Mongo Mobile & Fiber
999 GB
30 days validity
$89.00
$0.09/GB
All 15 plans covering 21+ days
Mongo Mobile & Fiber
999 GB
30 days validity
$89.00
$0.09/GB
Mongo Mobile & Fiber
20 GB
30 days validity
$29.00
$1.45/GB
Mongo Mobile & Fiber
10 GB
30 days validity
$18.00
$1.80/GB
Mongo Mobile & Fiber
5 GB
30 days validity
$11.00
$2.20/GB
Mongo Mobile & Fiber
3 GB
30 days validity
$7.50
$2.50/GB
EUconnect
3 GB
30 days validity
$9.00
$3.00/GB
Asialink
5 GB
30 days validity
$15.00
$3.00/GB
Oceanlink
3 GB
30 days validity
$10.50
$3.50/GB
Eurolink
3 GB
30 days validity
$11.00
$3.67/GB
Menalink
3 GB
30 days validity
$12.00
$4.00/GB
Asialink
3 GB
30 days validity
$13.00
$4.33/GB
Safarilink
3 GB
30 days validity
$13.00
$4.33/GB
Other trip lengths for Mongolia
21-day eSIM plans by destination
Frequently asked questions — 21-day Mongolia eSIM
What eSIM do I need for 21 days in Mongolia?
Look for a plan with at least 21 days of validity. The plans above all cover your full trip. Activate when you land — validity starts from first use, not from purchase.
How much data do I need for 21 days in Mongolia?
A typical traveler uses 1–2 GB per day for maps, messaging, and occasional video. For 21 days that is roughly 21–42 GB.
When should I install my Mongolia eSIM?
Install before you travel, at home over Wi-Fi. Activation begins when you arrive and connect to a local carrier.
Can I top up if I run out of data?
Many plans are rechargeable. You can purchase an additional plan from LTE.app at any time — no need to find a SIM card shop.
Save on every trip with Pro or Premium
Pro 7% off · Premium 12% off · Smart Coach AI · Offline activation
Mongolia travel connectivity
All Mongolia pages — linked for faster research